Question

What is the name of this theorem and how do I prove it?

score 75 · Answer 1 · 2026-04-15 15:33:34

75

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What is the name of this theorem and how do I prove it?

Published on 15 Apr 2026 - 15:33

score 218 · Answer 2 · 2026-04-16 23:00:04

218

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Fun Equilateral Triangle Problem

Published on 16 Apr 2026 - 23:00

score 144 · Answer 3 · 2026-04-12 04:25:36

144

Views

How to prove that the median and angle bisector are not the same for non-isoceles triangles.

Published on 12 Apr 2026 - 4:25

score 41 · Answer 4 · 2026-04-14 13:24:39

41

Views

A problem of similarity related to Erdös-Mordell Theorem

Published on 14 Apr 2026 - 13:24

score 333 · Answer 5 · 2026-04-14 04:51:06

333

Views

Issues generating all primitive integer triangles with 60 degree angle (Eisenstein Triples)

Published on 14 Apr 2026 - 4:51

score 66 · Answer 6 · 2026-04-14 10:29:18

66

Views

How to find sin A, cos A, and tan A by having a basis from a given figure.

Published on 14 Apr 2026 - 10:29

score 126 · Answer 7 · 2026-04-09 17:15:36

126

Views

Is it possible to find the vertices of a triangle given its incenter, circumcenter and centroid?

Published on 09 Apr 2026 - 17:15

score 271 · Answer 8 · 2026-04-16 16:34:55

271

Views

Thales Theorem with Trapezoids

Published on 16 Apr 2026 - 16:34

score 174 · Answer 9 · 2026-04-12 05:01:06

174

Views

Geometry question, triangles

Published on 12 Apr 2026 - 5:01

score 54 · Answer 10 · 2026-04-11 18:18:57

54

Views

Showing that the sum of the angles of a hyperbolic triangle are less than $\pi$

Published on 11 Apr 2026 - 18:18

score 134 · Answer 11 · 2026-05-14 20:10:17

134

Views

Prove that three circumferences in a triangle intersect in a point

Published on 14 May 2026 - 20:10

score 69 · Answer 12 · 2026-05-05 03:37:19

69

Views

A property of parallelism in a figure formed by an ellipse and a circle with same area

Published on 05 May 2026 - 3:37

score 129 · Answer 13 · 2026-04-16 06:09:57

129

Views

The point $O$ placed inside triangle so that $\vec{OA}+2\vec{OB}+3\vec{OC}=0$

Published on 16 Apr 2026 - 6:09

score 268 · Answer 14 · 2026-04-16 12:30:00

268

Views

Given inradius and half of one side, need to find the area of Triangle

Published on 16 Apr 2026 - 12:30

score 35 · Answer 15 · 2026-04-16 22:18:58

35

Views

If I have the following triangles in a circle can I draw any conclusion about their similarity?

Published on 16 Apr 2026 - 22:18

List Question

What is the name of this theorem and how do I prove it?

Fun Equilateral Triangle Problem

How to prove that the median and angle bisector are not the same for non-isoceles triangles.

A problem of similarity related to Erdös-Mordell Theorem

Issues generating all primitive integer triangles with 60 degree angle (Eisenstein Triples)

How to find sin A, cos A, and tan A by having a basis from a given figure.

Is it possible to find the vertices of a triangle given its incenter, circumcenter and centroid?

Thales Theorem with Trapezoids

Geometry question, triangles

Showing that the sum of the angles of a hyperbolic triangle are less than $\pi$

Prove that three circumferences in a triangle intersect in a point

A property of parallelism in a figure formed by an ellipse and a circle with same area

The point $O$ placed inside triangle so that $\vec{OA}+2\vec{OB}+3\vec{OC}=0$

Given inradius and half of one side, need to find the area of Triangle

If I have the following triangles in a circle can I draw any conclusion about their similarity?

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