Question

Proof that the sum of exterior angles of a complex polygon or a non-planar polygon is greater than 2 Pi

score 519 · Answer 1 · 2026-04-12 21:01:21

519

Views

Proof that the sum of exterior angles of a complex polygon or a non-planar polygon is greater than 2 Pi

Published on 12 Apr 2026 - 21:01

score 28 · Answer 2 · 2026-04-11 17:38:12

28

Views

Angle between two lines is $π/3$ where direction cosines are given

Published on 11 Apr 2026 - 17:38

score 37 · Answer 3 · 2026-04-13 20:47:15

37

Views

5 and 7 point regular 3d shape

Published on 13 Apr 2026 - 20:47

score 31 · Answer 4 · 2026-04-09 18:30:07

31

Views

Rotating $3D$ one point to the other point

Published on 09 Apr 2026 - 18:30

score 48 · Answer 5 · 2026-04-13 13:30:12

48

Views

Finding the equation of line given the two intersecting lines of planes

Published on 13 Apr 2026 - 13:30

score 47 · Answer 6 · 2026-04-13 18:11:17

47

Views

Trace $x=y$ when plotting a paraboloid

Published on 13 Apr 2026 - 18:11

score 174 · Answer 7 · 2026-04-13 10:40:57

174

Views

Finding point in 3D Space on line with fixed distance

Published on 13 Apr 2026 - 10:40

score 256 · Answer 8 · 2026-04-12 17:32:18

256

Views

Plane parallel to the base of a triangular pyramid

Published on 12 Apr 2026 - 17:32

score 59 · Answer 9 · 2026-04-10 11:46:23

59

Views

$z=x=y$ in $\Bbb R^3$

Published on 10 Apr 2026 - 11:46

score 655 · Answer 10 · 2026-04-11 14:24:20

655

Views

Projection of triangle in 3D to 2D, and reverse

Published on 11 Apr 2026 - 14:24

score 400 · Answer 11 · 2021-03-19 01:55:06

400

Views

Why is $\cos\theta$ used in three-dimensional geometry in place of $\tan\theta$ or $\sin\theta$?

Published on 19 Mar 2021 - 1:55

score 64 · Answer 12 · 2026-03-30 15:10:14

64

Views

Calculate the Position on rotated node using unProject on plane

Published on 30 Mar 2026 - 15:10

score 94 · Answer 13 · 2026-04-12 01:05:49

94

Views

Can you determine if a sphere is completely occluded by other spheres, given coordinates and radii?

Published on 12 Apr 2026 - 1:05

score 170 · Answer 14 · 2026-04-13 06:44:14

170

Views

Geometric significance of 3 linear equations of three unknowns.

Published on 13 Apr 2026 - 6:44

score 1.9k · Answer 15 · 2026-04-12 23:06:50

1.9k

Views

Math Kangaroo Problem 3D Geometry

Published on 12 Apr 2026 - 23:06

List Question

Proof that the sum of exterior angles of a complex polygon or a non-planar polygon is greater than 2 Pi

Angle between two lines is $π/3$ where direction cosines are given

5 and 7 point regular 3d shape

Rotating $3D$ one point to the other point

Finding the equation of line given the two intersecting lines of planes

Trace $x=y$ when plotting a paraboloid

Finding point in 3D Space on line with fixed distance

Plane parallel to the base of a triangular pyramid

$z=x=y$ in $\Bbb R^3$

Projection of triangle in 3D to 2D, and reverse

Why is $\cos\theta$ used in three-dimensional geometry in place of $\tan\theta$ or $\sin\theta$?

Calculate the Position on rotated node using unProject on plane

Can you determine if a sphere is completely occluded by other spheres, given coordinates and radii?

Geometric significance of 3 linear equations of three unknowns.

Math Kangaroo Problem 3D Geometry

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