Question

A nice property of a triangle With side 1,2,2

score 202 · Answer 1 · 2026-04-13 21:13:57

202

Views

A nice property of a triangle With side 1,2,2

Published on 13 Apr 2026 - 21:13

score 58 · Answer 2 · 2026-04-15 00:39:53

58

Views

In a tetrahedron, reflect each point over the line from an edge's midpoint through its center. Is it the tetrahedron itself?

Published on 15 Apr 2026 - 0:39

score 146 · Answer 3 · 2026-04-14 17:47:44

146

Views

Efficiently find the intersection of a ray with a convex hull

Published on 14 Apr 2026 - 17:47

score 134 · Answer 4 · 2026-04-12 20:23:28

134

Views

Geometrically determining the symmetry of a tetrahedron (using solid geometry, not group theory)

Published on 12 Apr 2026 - 20:23

score 63 · Answer 5 · 2026-04-13 22:51:18

63

Views

Why is $\textbf{A} = A_i \textbf{e}_i$ not independent of choice of coordinates?

Published on 13 Apr 2026 - 22:51

score 80 · Answer 6 · 2026-04-11 05:15:48

80

Views

Euclidean Geometry with Feet of Perpendicular

Published on 11 Apr 2026 - 5:15

score 42 · Answer 7 · 2026-04-14 17:06:17

42

Views

By prolonging its sides, one can partition an arbitrary polygon into convex polygons

Published on 14 Apr 2026 - 17:06

score 111 · Answer 8 · 2026-04-13 14:21:26

111

Views

2 points outside the circle and the shortest path connected both of them while touching the circle.

Published on 13 Apr 2026 - 14:21

score 59 · Answer 9 · 2026-04-11 17:25:44

59

Views

Polygonal chain beveling

Published on 11 Apr 2026 - 17:25

score 91 · Answer 10 · 2026-04-11 18:48:32

91

Views

A geometry problem involving tangents of circumference

Published on 11 Apr 2026 - 18:48

score 58 · Answer 11 · 2026-04-08 06:45:16

58

Views

What alternative proof can be used on this theorem?

Published on 08 Apr 2026 - 6:45

score 123 · Answer 12 · 2026-04-11 11:43:19

123

Views

What's the ratio?

Published on 11 Apr 2026 - 11:43

score 114 · Answer 13 · 2026-04-10 12:03:11

114

Views

How can I (semi-formally) convince myself that Euclidean geometry comports with visual intuition?

Published on 10 Apr 2026 - 12:03

score 129 · Answer 14 · 2026-04-13 05:29:09

129

Views

Congruency and congruent triangles

Published on 13 Apr 2026 - 5:29

score 54 · Answer 15 · 2026-04-12 12:00:50

54

Views

Can a oblique antiprism be constructed?

Published on 12 Apr 2026 - 12:00

List Question

A nice property of a triangle With side 1,2,2

In a tetrahedron, reflect each point over the line from an edge's midpoint through its center. Is it the tetrahedron itself?

Efficiently find the intersection of a ray with a convex hull

Geometrically determining the symmetry of a tetrahedron (using solid geometry, not group theory)

Why is $\textbf{A} = A_i \textbf{e}_i$ not independent of choice of coordinates?

Euclidean Geometry with Feet of Perpendicular

By prolonging its sides, one can partition an arbitrary polygon into convex polygons

2 points outside the circle and the shortest path connected both of them while touching the circle.

Polygonal chain beveling

A geometry problem involving tangents of circumference

What alternative proof can be used on this theorem?

What's the ratio?

How can I (semi-formally) convince myself that Euclidean geometry comports with visual intuition?

Congruency and congruent triangles

Can a oblique antiprism be constructed?

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