List questions from geometric-transformation

Published on 23 Feb 2026 - 2:42

122

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Find the ratio $\frac{AF}{FC}$

Published on 30 Aug 2020 - 11:17

216

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What does George E. Martin mean by "The belief that geometries can be classified by their symmetry groups is no longer tenable"?

Published on 04 Sep 2020 - 5:23

114

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Prove that $BXOY$ is cyclic with spiral similarity over a midpoint

Published on 04 Oct 2020 - 10:52

113

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How to reconstruct a quadrilateral ABCD only using compass and straight edge?

Published on 08 Oct 2020 - 11:31

219

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A Transformation of a cross-shaped grid filled with 1s (Proof of impossibility?)

Published on 13 Oct 2020 - 1:29

140

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Prove that IK, AC, BD are concurrent.

Published on 31 Oct 2020 - 3:58

199

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Problem with right angle triangle, circumscribed circle, tangent and the half of its height

Published on 23 Feb 2026 - 2:43

260

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To prove $EA = FB$ or that $CQ'$ is radical axis

Published on 23 Feb 2026 - 2:38

289

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A geometry question...

Published on 07 Nov 2020 - 11:18

248

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How to remap points on 2d plane to another plane with regression kind of approach?

Published on 24 Nov 2020 - 13:36

85

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Conformal map $\mathbb{C} \setminus (\{ z \mid \mathrm{Im}(z) \leq 0\} \cup\{z = x+ iy \mid y \geq \sqrt{x^2 + 1}, x \leq 0\})$ onto unit disk

Published on 24 Dec 2020 - 17:01

99

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The image of a line through an inversion

Published on 23 Feb 2026 - 10:07

440

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Midpoint of a line segment passing through two points.

Published on 05 Jan 2021 - 7:25

666

Views

Point within the interior of a given angle

Published on 19 Feb 2021 - 20:05

List Question

Find the angles of triangle $NPQ$.

Find the ratio $\frac{AF}{FC}$

What does George E. Martin mean by "The belief that geometries can be classified by their symmetry groups is no longer tenable"?

Prove that $BXOY$ is cyclic with spiral similarity over a midpoint

How to reconstruct a quadrilateral ABCD only using compass and straight edge?

A Transformation of a cross-shaped grid filled with 1s (Proof of impossibility?)

Prove that IK, AC, BD are concurrent.

Problem with right angle triangle, circumscribed circle, tangent and the half of its height

To prove $EA = FB$ or that $CQ'$ is radical axis

A geometry question...

How to remap points on 2d plane to another plane with regression kind of approach?

Conformal map $\mathbb{C} \setminus (\{ z \mid \mathrm{Im}(z) \leq 0\} \cup\{z = x+ iy \mid y \geq \sqrt{x^2 + 1}, x \leq 0\})$ onto unit disk

The image of a line through an inversion

Midpoint of a line segment passing through two points.

Point within the interior of a given angle

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