List questions from triangles

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Problem similar to midpoint theorem

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What do "mod $2x$" and "mod $x$" mean when used with angles?

Published on 05 May 2026 - 10:56

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Find angle inside isosceles triangle

Published on 05 May 2026 - 2:44

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How to find a triangle vertices given a barycenter and a normal

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Square inside a triangle problem [see desc.]

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How to name 2 similar triangles?

Published on 10 May 2026 - 12:52

454

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Given $\triangle ABC$ with $\angle C = 60^\circ$, show $a^2+b^2-ab=c^2$ without trigonometry

Published on 12 Apr 2026 - 18:12

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A line from a vertex of a triangle divides opposite side in a ratio,determine the ratio of areas?

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750

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Triangle inequality and graphs (min cost matching graph)

Published on 29 Apr 2026 - 12:27

110

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Prove of an inequality between the radius and segments of an incircle

Published on 02 May 2026 - 20:19

362

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Understanding the equality in triangle inequality.

Published on 10 Apr 2026 - 1:25

271

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Similarity of nested triangles

Published on 13 Apr 2026 - 11:19

65

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I want to find the $\cos ({\hat{BCD}})$. However, I don't have any idea about how to. Can you assist?

Published on 03 May 2026 - 8:14

94

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Is it possible ti find $∠X$ in below figure?

Published on 08 Apr 2026 - 20:38

List Question

Find the maximum area of a triangle given angle and opposite side

Problem similar to midpoint theorem

What do "mod $2x$" and "mod $x$" mean when used with angles?

Find angle inside isosceles triangle

How to find a triangle vertices given a barycenter and a normal

Square inside a triangle problem [see desc.]

How to name 2 similar triangles?

Given $\triangle ABC$ with $\angle C = 60^\circ$, show $a^2+b^2-ab=c^2$ without trigonometry

A line from a vertex of a triangle divides opposite side in a ratio,determine the ratio of areas?

Triangle inequality and graphs (min cost matching graph)

Prove of an inequality between the radius and segments of an incircle

Understanding the equality in triangle inequality.

Similarity of nested triangles

I want to find the $\cos ({\hat{BCD}})$. However, I don't have any idea about how to. Can you assist?

Is it possible ti find $∠X$ in below figure?

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