Is there a name for a 3D shape that looks like a circle when viewed from one axis, a square from another, and...












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The shape can be constructed by taking a cylinder with its height equal to its diameter and cutting a triangle out of it when viewing it from the side with the base of the triangle matching one end of the cylinder and the opposite point of the triangle in the center of where the opposite end of the cylinder was.



Is there a name for this shape?










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    $begingroup$


    The shape can be constructed by taking a cylinder with its height equal to its diameter and cutting a triangle out of it when viewing it from the side with the base of the triangle matching one end of the cylinder and the opposite point of the triangle in the center of where the opposite end of the cylinder was.



    Is there a name for this shape?










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      5


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      $begingroup$


      The shape can be constructed by taking a cylinder with its height equal to its diameter and cutting a triangle out of it when viewing it from the side with the base of the triangle matching one end of the cylinder and the opposite point of the triangle in the center of where the opposite end of the cylinder was.



      Is there a name for this shape?










      share|cite|improve this question









      $endgroup$




      The shape can be constructed by taking a cylinder with its height equal to its diameter and cutting a triangle out of it when viewing it from the side with the base of the triangle matching one end of the cylinder and the opposite point of the triangle in the center of where the opposite end of the cylinder was.



      Is there a name for this shape?







      geometry 3d






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      asked Sep 30 '16 at 0:32









      m_duranm_duran

      261




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          4 Answers
          4






          active

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          9












          $begingroup$

          Like this?



          enter image description here



          It has three Forms depending from which side you look:



          enter image description here






          share|cite|improve this answer









          $endgroup$













          • $begingroup$
            Very nice. Just curious how did you draw this?
            $endgroup$
            – yoyostein
            Sep 30 '16 at 1:49






          • 1




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            I used Mathematica's RegionPlot3D and added three constraints for the three planes accordingly. In the end i just increased the plotpoints and voilá
            $endgroup$
            – Julien Kluge
            Sep 30 '16 at 10:22










          • $begingroup$
            Yes exactly like this. Does this have a name?
            $endgroup$
            – m_duran
            Sep 30 '16 at 17:17



















          2












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          The shape displayed in Julien Kluge's answer may be seen as a special version of a cylindrical segment, which MathWorld describes as the solid cut from a circular cylinder by two (or more) planes.
          In any case, it can be made by removing two cylindrical hooves from a cylinder. No idea whether there is a distinctive name for what is left, but the name cylindrical wedge is already reserved for the version with only one slanted cut through the cylinder base, examples of which are the cylindrical hooves mentioned above.






          share|cite|improve this answer











          $endgroup$





















            1












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            It is called a chisel tip. A round chisel. However, not all chisels are round.






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            $endgroup$





















              0












              $begingroup$

              For a circular base it is like a pencil lead sharp chisel line edge cut/ground by sandpaper that way for drawing thin lines. Elliptic arc intersection lines on side view appear together with square border.






              share|cite|improve this answer









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                4 Answers
                4






                active

                oldest

                votes








                4 Answers
                4






                active

                oldest

                votes









                active

                oldest

                votes






                active

                oldest

                votes









                9












                $begingroup$

                Like this?



                enter image description here



                It has three Forms depending from which side you look:



                enter image description here






                share|cite|improve this answer









                $endgroup$













                • $begingroup$
                  Very nice. Just curious how did you draw this?
                  $endgroup$
                  – yoyostein
                  Sep 30 '16 at 1:49






                • 1




                  $begingroup$
                  I used Mathematica's RegionPlot3D and added three constraints for the three planes accordingly. In the end i just increased the plotpoints and voilá
                  $endgroup$
                  – Julien Kluge
                  Sep 30 '16 at 10:22










                • $begingroup$
                  Yes exactly like this. Does this have a name?
                  $endgroup$
                  – m_duran
                  Sep 30 '16 at 17:17
















                9












                $begingroup$

                Like this?



                enter image description here



                It has three Forms depending from which side you look:



                enter image description here






                share|cite|improve this answer









                $endgroup$













                • $begingroup$
                  Very nice. Just curious how did you draw this?
                  $endgroup$
                  – yoyostein
                  Sep 30 '16 at 1:49






                • 1




                  $begingroup$
                  I used Mathematica's RegionPlot3D and added three constraints for the three planes accordingly. In the end i just increased the plotpoints and voilá
                  $endgroup$
                  – Julien Kluge
                  Sep 30 '16 at 10:22










                • $begingroup$
                  Yes exactly like this. Does this have a name?
                  $endgroup$
                  – m_duran
                  Sep 30 '16 at 17:17














                9












                9








                9





                $begingroup$

                Like this?



                enter image description here



                It has three Forms depending from which side you look:



                enter image description here






                share|cite|improve this answer









                $endgroup$



                Like this?



                enter image description here



                It has three Forms depending from which side you look:



                enter image description here







                share|cite|improve this answer












                share|cite|improve this answer



                share|cite|improve this answer










                answered Sep 30 '16 at 0:45









                Julien KlugeJulien Kluge

                22417




                22417












                • $begingroup$
                  Very nice. Just curious how did you draw this?
                  $endgroup$
                  – yoyostein
                  Sep 30 '16 at 1:49






                • 1




                  $begingroup$
                  I used Mathematica's RegionPlot3D and added three constraints for the three planes accordingly. In the end i just increased the plotpoints and voilá
                  $endgroup$
                  – Julien Kluge
                  Sep 30 '16 at 10:22










                • $begingroup$
                  Yes exactly like this. Does this have a name?
                  $endgroup$
                  – m_duran
                  Sep 30 '16 at 17:17


















                • $begingroup$
                  Very nice. Just curious how did you draw this?
                  $endgroup$
                  – yoyostein
                  Sep 30 '16 at 1:49






                • 1




                  $begingroup$
                  I used Mathematica's RegionPlot3D and added three constraints for the three planes accordingly. In the end i just increased the plotpoints and voilá
                  $endgroup$
                  – Julien Kluge
                  Sep 30 '16 at 10:22










                • $begingroup$
                  Yes exactly like this. Does this have a name?
                  $endgroup$
                  – m_duran
                  Sep 30 '16 at 17:17
















                $begingroup$
                Very nice. Just curious how did you draw this?
                $endgroup$
                – yoyostein
                Sep 30 '16 at 1:49




                $begingroup$
                Very nice. Just curious how did you draw this?
                $endgroup$
                – yoyostein
                Sep 30 '16 at 1:49




                1




                1




                $begingroup$
                I used Mathematica's RegionPlot3D and added three constraints for the three planes accordingly. In the end i just increased the plotpoints and voilá
                $endgroup$
                – Julien Kluge
                Sep 30 '16 at 10:22




                $begingroup$
                I used Mathematica's RegionPlot3D and added three constraints for the three planes accordingly. In the end i just increased the plotpoints and voilá
                $endgroup$
                – Julien Kluge
                Sep 30 '16 at 10:22












                $begingroup$
                Yes exactly like this. Does this have a name?
                $endgroup$
                – m_duran
                Sep 30 '16 at 17:17




                $begingroup$
                Yes exactly like this. Does this have a name?
                $endgroup$
                – m_duran
                Sep 30 '16 at 17:17











                2












                $begingroup$

                The shape displayed in Julien Kluge's answer may be seen as a special version of a cylindrical segment, which MathWorld describes as the solid cut from a circular cylinder by two (or more) planes.
                In any case, it can be made by removing two cylindrical hooves from a cylinder. No idea whether there is a distinctive name for what is left, but the name cylindrical wedge is already reserved for the version with only one slanted cut through the cylinder base, examples of which are the cylindrical hooves mentioned above.






                share|cite|improve this answer











                $endgroup$


















                  2












                  $begingroup$

                  The shape displayed in Julien Kluge's answer may be seen as a special version of a cylindrical segment, which MathWorld describes as the solid cut from a circular cylinder by two (or more) planes.
                  In any case, it can be made by removing two cylindrical hooves from a cylinder. No idea whether there is a distinctive name for what is left, but the name cylindrical wedge is already reserved for the version with only one slanted cut through the cylinder base, examples of which are the cylindrical hooves mentioned above.






                  share|cite|improve this answer











                  $endgroup$
















                    2












                    2








                    2





                    $begingroup$

                    The shape displayed in Julien Kluge's answer may be seen as a special version of a cylindrical segment, which MathWorld describes as the solid cut from a circular cylinder by two (or more) planes.
                    In any case, it can be made by removing two cylindrical hooves from a cylinder. No idea whether there is a distinctive name for what is left, but the name cylindrical wedge is already reserved for the version with only one slanted cut through the cylinder base, examples of which are the cylindrical hooves mentioned above.






                    share|cite|improve this answer











                    $endgroup$



                    The shape displayed in Julien Kluge's answer may be seen as a special version of a cylindrical segment, which MathWorld describes as the solid cut from a circular cylinder by two (or more) planes.
                    In any case, it can be made by removing two cylindrical hooves from a cylinder. No idea whether there is a distinctive name for what is left, but the name cylindrical wedge is already reserved for the version with only one slanted cut through the cylinder base, examples of which are the cylindrical hooves mentioned above.







                    share|cite|improve this answer














                    share|cite|improve this answer



                    share|cite|improve this answer








                    edited Sep 30 '16 at 1:50

























                    answered Sep 30 '16 at 1:09









                    ccornccorn

                    8,25822047




                    8,25822047























                        1












                        $begingroup$

                        It is called a chisel tip. A round chisel. However, not all chisels are round.






                        share|cite|improve this answer











                        $endgroup$


















                          1












                          $begingroup$

                          It is called a chisel tip. A round chisel. However, not all chisels are round.






                          share|cite|improve this answer











                          $endgroup$
















                            1












                            1








                            1





                            $begingroup$

                            It is called a chisel tip. A round chisel. However, not all chisels are round.






                            share|cite|improve this answer











                            $endgroup$



                            It is called a chisel tip. A round chisel. However, not all chisels are round.







                            share|cite|improve this answer














                            share|cite|improve this answer



                            share|cite|improve this answer








                            edited Feb 2 at 18:40

























                            answered Sep 30 '16 at 1:35









                            Sohail SiSohail Si

                            15617




                            15617























                                0












                                $begingroup$

                                For a circular base it is like a pencil lead sharp chisel line edge cut/ground by sandpaper that way for drawing thin lines. Elliptic arc intersection lines on side view appear together with square border.






                                share|cite|improve this answer









                                $endgroup$


















                                  0












                                  $begingroup$

                                  For a circular base it is like a pencil lead sharp chisel line edge cut/ground by sandpaper that way for drawing thin lines. Elliptic arc intersection lines on side view appear together with square border.






                                  share|cite|improve this answer









                                  $endgroup$
















                                    0












                                    0








                                    0





                                    $begingroup$

                                    For a circular base it is like a pencil lead sharp chisel line edge cut/ground by sandpaper that way for drawing thin lines. Elliptic arc intersection lines on side view appear together with square border.






                                    share|cite|improve this answer









                                    $endgroup$



                                    For a circular base it is like a pencil lead sharp chisel line edge cut/ground by sandpaper that way for drawing thin lines. Elliptic arc intersection lines on side view appear together with square border.







                                    share|cite|improve this answer












                                    share|cite|improve this answer



                                    share|cite|improve this answer










                                    answered Oct 23 '16 at 20:16









                                    NarasimhamNarasimham

                                    21.2k62258




                                    21.2k62258






























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