Question

Prove that a tetrahedral angle can be intersected by a plane in such a way that the cross section is a parallelogram.

score 96 · Answer 1 · 2016-12-17 01:38:35

96

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Prove that a tetrahedral angle can be intersected by a plane in such a way that the cross section is a parallelogram.

Published on 17 Dec 2016 - 1:38

score 2.2k · Answer 2 · 2026-03-25 20:19:10

2.2k

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Online view of a polyhedron defined by linear inequalities

Published on 25 Mar 2026 - 20:19

score 264 · Answer 3 · 2026-03-26 14:22:17

264

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For which dimensions does there exist a regular $n$-polytope such that the distance of its vertex to its center equals the length of its side?

Published on 26 Mar 2026 - 14:22

score 325 · Answer 4 · 2026-03-27 01:45:07

325

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Adding redundant inequality to TDI system remains TDI

Published on 27 Mar 2026 - 1:45

score 344 · Answer 5 · 2026-03-27 15:18:01

344

Views

Find the supporting hyperplane of the cross polytope

Published on 27 Mar 2026 - 15:18

score 95 · Answer 6 · 2017-01-19 15:38:39

95

Views

Equal Equilateralizer Point in a tetrahedron

Published on 19 Jan 2017 - 15:38

score 31 · Answer 7 · 2017-01-24 17:06:44

31

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Total number of ways to paint great rhombicosadodecahedron with n colors

Published on 24 Jan 2017 - 17:06

score 79 · Answer 8 · 2026-03-26 17:30:38

79

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Condition for two polytopes sharing edges, vertices or facets

Published on 26 Mar 2026 - 17:30

score 357 · Answer 9 · 2026-03-25 04:41:13

357

Views

The Canonical Triangle of a Tetrahedron

Published on 25 Mar 2026 - 4:41

score 28.5k · Answer 10 · 2017-01-30 17:48:54

28.5k

Views

Is it possible to have a spherical object with only hexagonal faces?

Published on 30 Jan 2017 - 17:48

score 605 · Answer 11 · 2026-03-26 06:27:28

605

Views

How does the Lemke-Howson Algorithm choose a vertex?

Published on 26 Mar 2026 - 6:27

score 854 · Answer 12 · 2026-03-26 19:00:38

854

Views

How to determine the points of intersection between a 3d circle and polyhedron in matlab

Published on 26 Mar 2026 - 19:00

score 1.2k · Answer 13 · 2026-03-25 10:56:06

1.2k

Views

Looking for references about a tessellation of a regular polygon by rhombuses.

Published on 25 Mar 2026 - 10:56

score 1k · Answer 14 · 2026-03-27 19:43:41

1k

Views

Proving that a polyhedron has integer vertices

Published on 27 Mar 2026 - 19:43

score 1.5k · Answer 15 · 2017-02-09 02:36:24

1.5k

Views

What does it mean for a polyhedron not to contain a line?

Published on 09 Feb 2017 - 2:36

List Question

Prove that a tetrahedral angle can be intersected by a plane in such a way that the cross section is a parallelogram.

Online view of a polyhedron defined by linear inequalities

For which dimensions does there exist a regular $n$-polytope such that the distance of its vertex to its center equals the length of its side?

Adding redundant inequality to TDI system remains TDI

Find the supporting hyperplane of the cross polytope

Equal Equilateralizer Point in a tetrahedron

Total number of ways to paint great rhombicosadodecahedron with n colors

Condition for two polytopes sharing edges, vertices or facets

The Canonical Triangle of a Tetrahedron

Is it possible to have a spherical object with only hexagonal faces?

How does the Lemke-Howson Algorithm choose a vertex?

How to determine the points of intersection between a 3d circle and polyhedron in matlab

Looking for references about a tessellation of a regular polygon by rhombuses.

Proving that a polyhedron has integer vertices

What does it mean for a polyhedron not to contain a line?

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