Question

Finding the ratio of diagonal segments of quadrilateral given four sides and a diagonal.

score 1.6k · Answer 1 · 2026-04-11 09:37:53

1.6k

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Finding the ratio of diagonal segments of quadrilateral given four sides and a diagonal.

Published on 11 Apr 2026 - 9:37

score 1.9k · Answer 2 · 2026-04-14 15:19:24

1.9k

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Fastest method to draw constructible regular polygons

Published on 14 Apr 2026 - 15:19

score 127 · Answer 3 · 2026-04-12 03:42:46

127

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Maximize the area of triangle $ABC$

Published on 12 Apr 2026 - 3:42

score 164 · Answer 4 · 2026-04-18 14:58:19

164

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Hint for show that $\sin AOB \sin COD + \sin AOC \sin DOB + \sin AOD \sin BOC = 0$

Published on 18 Apr 2026 - 14:58

score 1.4k · Answer 5 · 2026-04-16 07:47:51

1.4k

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Computing angle of ellipse or ellipsoid

Published on 16 Apr 2026 - 7:47

score 691 · Answer 6 · 2026-04-12 14:19:55

691

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Intersection of ellipsoid & hyperplane, inequality chain.

Published on 12 Apr 2026 - 14:19

score 45 · Answer 7 · 2026-04-14 02:21:03

45

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Are there always $2(n-1)$ ways to intersect two polygons such that these intersections are convex polygons with $3,...,2n$ vertices each?

Published on 14 Apr 2026 - 2:21

score 280 · Answer 8 · 2026-04-13 19:29:25

280

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Let P be the point where BY and CZ meet. Assume that BY=CZ and PY=PZ. Show that AB=AC.

Published on 13 Apr 2026 - 19:29

score 175 · Answer 9 · 2026-04-12 15:03:16

175

Views

Triangle's Area within a Trapezoid

Published on 12 Apr 2026 - 15:03

score 150 · Answer 10 · 2026-04-11 11:04:29

150

Views

Given that AB=AC and BY=CZ, prove that PY=PZ.

Published on 11 Apr 2026 - 11:04

score 153 · Answer 11 · 2026-04-12 20:25:05

153

Views

Rotation matrix in $\mathbb{R}^2$.

Published on 12 Apr 2026 - 20:25

score 637 · Answer 12 · 2026-04-11 17:34:17

637

Views

Proof of Square Cube Law

Published on 11 Apr 2026 - 17:34

score 1.1k · Answer 13 · 2026-04-11 09:29:33

1.1k

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Is it possible to construct an isosceles triangle by using a ruler and without using a pair of compasses?

Published on 11 Apr 2026 - 9:29

score 106 · Answer 14 · 2026-04-14 02:44:16

106

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Relation between sqrt and ratio in ruler and compass?

Published on 14 Apr 2026 - 2:44

score 127 · Answer 15 · 2026-04-13 22:36:58

127

Views

Ratio of Areas of Quadrilateral

Published on 13 Apr 2026 - 22:36

List Question

Finding the ratio of diagonal segments of quadrilateral given four sides and a diagonal.

Fastest method to draw constructible regular polygons

Maximize the area of triangle $ABC$

Hint for show that $\sin AOB \sin COD + \sin AOC \sin DOB + \sin AOD \sin BOC = 0$

Computing angle of ellipse or ellipsoid

Intersection of ellipsoid & hyperplane, inequality chain.

Are there always $2(n-1)$ ways to intersect two polygons such that these intersections are convex polygons with $3,...,2n$ vertices each?

Let P be the point where BY and CZ meet. Assume that BY=CZ and PY=PZ. Show that AB=AC.

Triangle's Area within a Trapezoid

Given that AB=AC and BY=CZ, prove that PY=PZ.

Rotation matrix in $\mathbb{R}^2$.

Proof of Square Cube Law

Is it possible to construct an isosceles triangle by using a ruler and without using a pair of compasses?

Relation between sqrt and ratio in ruler and compass?

Ratio of Areas of Quadrilateral

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