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find the missing angles in this quadrilateral

score 388 · Answer 1 · 2026-05-07 12:47:08

388

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find the missing angles in this quadrilateral

Published on 07 May 2026 - 12:47

score 79 · Answer 2 · 2026-04-11 12:50:40

79

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An Interesting puzzle in elementary geometry

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score 2.5k · Answer 3 · 2026-05-03 07:28:32

2.5k

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What length would the sides of a triangle over Earth's surface be for the sum of its angles to be 180.1°

Published on 03 May 2026 - 7:28

score 2.1k · Answer 4 · 2026-04-09 16:30:12

2.1k

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How do I find all integral points inside a triangle efficiently

Published on 09 Apr 2026 - 16:30

score 957 · Answer 5 · 2026-05-05 06:19:30

957

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Probability that a random triangle with vertices on a circle contains an arbitrary point inside said circle

Published on 05 May 2026 - 6:19

score 873 · Answer 6 · 2026-05-02 23:48:35

873

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Published on 02 May 2026 - 23:48

score 51 · Answer 7 · 2026-04-16 01:45:32

51

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Published on 16 Apr 2026 - 1:45

score 150 · Answer 8 · 2026-04-13 14:53:52

150

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proving there exists no triangle with 3 vertices in specific area in a 3 x 3 triangle

Published on 13 Apr 2026 - 14:53

score 254 · Answer 9 · 2026-03-25 03:19:21

254

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Published on 25 Mar 2026 - 3:19

score 147 · Answer 10 · 2026-04-16 12:23:55

147

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Published on 16 Apr 2026 - 12:23

score 74 · Answer 11 · 2026-04-16 05:53:48

74

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Geometry -Length of triangle

Published on 16 Apr 2026 - 5:53

score 118 · Answer 12 · 2026-04-16 21:42:37

118

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Is $\arccos\left (\frac{\sqrt 6 +1 }{2\sqrt3}\right)= \arctan\left(\frac{\sqrt3 - \sqrt 2}{1+\sqrt 6} \right)$?

Published on 16 Apr 2026 - 21:42

score 282 · Answer 13 · 2026-04-15 19:10:03

282

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Isosceles triangle with duplicated side of 2 each and base $1+\sqrt{5}$, find the third angle.

Published on 15 Apr 2026 - 19:10

score 3.9k · Answer 14 · 2026-04-30 12:50:49

3.9k

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Published on 30 Apr 2026 - 12:50

score 88 · Answer 15 · 2026-04-10 16:59:34

88

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Rules of 4 colored problem

Published on 10 Apr 2026 - 16:59

List Question

find the missing angles in this quadrilateral

An Interesting puzzle in elementary geometry

What length would the sides of a triangle over Earth's surface be for the sum of its angles to be 180.1°

How do I find all integral points inside a triangle efficiently

Probability that a random triangle with vertices on a circle contains an arbitrary point inside said circle

Determinate the shaded area of the rectangle divided in 4 triangles

Determine unknown lengths of triangles

proving there exists no triangle with 3 vertices in specific area in a 3 x 3 triangle

Right triangle where all sides are integer lengths, and the two smaller sides differ by 1

What is the area of trapezoid DBCE?

Geometry -Length of triangle

Is $\arccos\left (\frac{\sqrt 6 +1 }{2\sqrt3}\right)= \arctan\left(\frac{\sqrt3 - \sqrt 2}{1+\sqrt 6} \right)$?

Isosceles triangle with duplicated side of 2 each and base $1+\sqrt{5}$, find the third angle.

Equilateral Triangle within a Rectangle

Rules of 4 colored problem

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