Question

What is the minimum and the maximum perimeter of a triangle with area $x$ that can be inscribed in a circle?

score 148 · Answer 1 · 2026-04-12 16:02:24

148

Views

What is the minimum and the maximum perimeter of a triangle with area $x$ that can be inscribed in a circle?

Published on 12 Apr 2026 - 16:02

score 218 · Answer 2 · 2026-04-13 05:51:17

218

Views

A problem about perpendicular lines and areas bounded by coordinate axes

Published on 13 Apr 2026 - 5:51

score 97 · Answer 3 · 2026-04-13 20:11:39

97

Views

Is the area of a triangle is less than that of its mean triangle of equal area?

Published on 13 Apr 2026 - 20:11

score 250 · Answer 4 · 2026-04-12 12:44:19

250

Views

Relation between AD, BD and BC

Published on 12 Apr 2026 - 12:44

score 138 · Answer 5 · 2026-04-10 12:53:01

138

Views

Angle chasing problem with quadrilateral - possible approaches?

Published on 10 Apr 2026 - 12:53

score 339 · Answer 6 · 2026-04-09 15:21:39

339

Views

A "New" Special Point in a Triangle.

Published on 09 Apr 2026 - 15:21

score 469 · Answer 7 · 2026-03-25 07:48:50

469

Views

Proving two triangles congruent given two congruent sides and a congruent median

Published on 25 Mar 2026 - 7:48

score 41 · Answer 8 · 2026-04-14 11:12:34

41

Views

It is impossible to find a multi-surface whose surroundings are equal to its area and its size

Published on 14 Apr 2026 - 11:12

score 64 · Answer 9 · 2026-04-15 14:01:30

64

Views

Proving the relation between sides and diagonals of parallelogram without trigonometry and Pythagoras theorem

Published on 15 Apr 2026 - 14:01

score 385 · Answer 10 · 2026-04-08 20:15:32

385

Views

Hess' Proof of Fuss' Formula

Published on 08 Apr 2026 - 20:15

score 105 · Answer 11 · 2026-04-13 11:00:05

105

Views

Why is the line/plane separation postulate necessary?

Published on 13 Apr 2026 - 11:00

score 50 · Answer 12 · 2026-04-16 13:17:37

50

Views

Prove that $\overrightarrow{AB}\cap \overrightarrow{BA} = \{A,B\}\cup \{X: A-X-B\}$

Published on 16 Apr 2026 - 13:17

score 190 · Answer 13 · 2026-04-10 14:11:16

190

Views

What is a gyrational square in this context?

Published on 10 Apr 2026 - 14:11

score 61 · Answer 14 · 2026-04-11 22:30:52

61

Views

Are there four dimensional generalizations of the Reuleaux triangle and other solids of constant width?

Published on 11 Apr 2026 - 22:30

score 89 · Answer 15 · 2026-04-13 01:09:42

89

Views

Prove a subset $E$ of $\mathbb{R}^3$ is exactly a plane if there are vectors $u,v,w\in\mathbb{R}^3$ such that $v$ and $w$ are linearly independent and

Published on 13 Apr 2026 - 1:09

List Question

What is the minimum and the maximum perimeter of a triangle with area $x$ that can be inscribed in a circle?

A problem about perpendicular lines and areas bounded by coordinate axes

Is the area of a triangle is less than that of its mean triangle of equal area?

Relation between AD, BD and BC

Angle chasing problem with quadrilateral - possible approaches?

A "New" Special Point in a Triangle.

Proving two triangles congruent given two congruent sides and a congruent median

It is impossible to find a multi-surface whose surroundings are equal to its area and its size

Proving the relation between sides and diagonals of parallelogram without trigonometry and Pythagoras theorem

Hess' Proof of Fuss' Formula

Why is the line/plane separation postulate necessary?

Prove that $\overrightarrow{AB}\cap \overrightarrow{BA} = \{A,B\}\cup \{X: A-X-B\}$

What is a gyrational square in this context?

Are there four dimensional generalizations of the Reuleaux triangle and other solids of constant width?

Prove a subset $E$ of $\mathbb{R}^3$ is exactly a plane if there are vectors $u,v,w\in\mathbb{R}^3$ such that $v$ and $w$ are linearly independent and

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