Question

Proof without words of a simple conjecture about any triangle

score 1k · Answer 1 · 2026-03-25 17:45:09

Proof without words of a simple conjecture about any triangle

Published on 25 Mar 2026 - 17:45

score 160 · Answer 2 · 2026-03-27 07:50:22

A $10$-point conic through midpoints and intersections of a quadrilateral's sides and diagonals, and the point of concurrence of three related circles

score 490 · Answer 3 · 2026-03-25 10:57:30

490

Views

Angles of triangle $\triangle XYZ$ do not depend on the position of point $P$ (proof needed)

Published on 25 Mar 2026 - 10:57

score 82 · Answer 4 · 2018-11-12 07:38:11

82

Views

Elementary euclidean geometry problem

Published on 12 Nov 2018 - 7:38

score 1.8k · Answer 5 · 2026-03-25 12:47:34

1.8k

Views

Finding Angle in Triangle inside square

Published on 25 Mar 2026 - 12:47

score 122 · Answer 6 · 2026-03-27 23:32:02

122

Views

Finding the side length of an equilateral triangle having three inscribed $120^\circ$ sectors in a certain arrangement

Published on 27 Mar 2026 - 23:32

score 75 · Answer 7 · 2026-03-28 01:12:59

75

Views

Prove Line Circumscribed Circle; Incircle; Excircle

Published on 28 Mar 2026 - 1:12

score 45 · Answer 8 · 2026-03-25 12:14:36

45

Views

Prove that here $BE×DF$ is fixed

Published on 25 Mar 2026 - 12:14

score 358 · Answer 9 · 2026-03-26 06:21:30

358

Views

Is there a name for the minimal surface connecting two straight line segments in 3-dim Euclidean space?

Published on 26 Mar 2026 - 6:21

score 636 · Answer 10 · 2026-03-25 11:03:19

636

Views

Any symmetry that fixes three non-collinear points is the identity

Published on 25 Mar 2026 - 11:03

score 51 · Answer 11 · 2026-03-25 10:55:32

51

Views

Three points fixed by the composition of an two isometries

Published on 25 Mar 2026 - 10:55

score 1.1k · Answer 12 · 2018-11-15 20:06:44

1.1k

Views

How to define two dimensional plane?

Published on 15 Nov 2018 - 20:06

score 96 · Answer 13 · 2026-03-28 01:13:01

96

Views

Prove that in $\triangle ABC$ ,$QP\parallel BC$

Published on 28 Mar 2026 - 1:13

score 160 · Answer 14 · 2026-03-25 17:44:39

160

Views

A conjecture about the sum of the areas of $3$ triangles built on the sides of any triangle (by means of centroid/orthocenter)

Published on 25 Mar 2026 - 17:44

score 396 · Answer 15 · 2026-03-28 01:13:36

396

Views

Circumradius of a perturbed equilateral triangle

Published on 28 Mar 2026 - 1:13

List Question

Proof without words of a simple conjecture about any triangle

A $10$-point conic through midpoints and intersections of a quadrilateral's sides and diagonals, and the point of concurrence of three related circles

Angles of triangle $\triangle XYZ$ do not depend on the position of point $P$ (proof needed)

Elementary euclidean geometry problem

Finding Angle in Triangle inside square

Finding the side length of an equilateral triangle having three inscribed $120^\circ$ sectors in a certain arrangement

Prove Line Circumscribed Circle; Incircle; Excircle

Prove that here $BE×DF$ is fixed

Is there a name for the minimal surface connecting two straight line segments in 3-dim Euclidean space?

Any symmetry that fixes three non-collinear points is the identity

Three points fixed by the composition of an two isometries

How to define two dimensional plane?

Prove that in $\triangle ABC$ ,$QP\parallel BC$

A conjecture about the sum of the areas of $3$ triangles built on the sides of any triangle (by means of centroid/orthocenter)

Circumradius of a perturbed equilateral triangle

Trending Questions

Popular # Hahtags

Popular Questions