List questions from euclidean-geometry

Published on 28 Mar 2026 - 15:26

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Showing the distance between a point $P$ the line determined by a segment $AB$ is $d=\frac{||AP\times AB||}{||AB||}$

Published on 13 Apr 2026 - 16:29

35

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When an arbitrary point belongs to a given pyramid?

Published on 15 Apr 2026 - 13:00

128

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Arbitrary Dot and Cross Products

Published on 11 Apr 2026 - 12:53

110

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New circles associated with the Miquel theorem configuration

Published on 14 Apr 2026 - 15:57

185

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Questions about Scale Factor?

Published on 09 Apr 2026 - 22:48

81

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A problem to show a certain sum is invariant in some Euclidean geometric configurations.

Published on 13 Apr 2026 - 7:51

107

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Clever way to sum these angles?

Published on 10 Apr 2026 - 5:39

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Area enclosed by a polygon

Published on 28 Mar 2026 - 23:11

435

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Show that if $Q'$ is any point on the line of action of $F$, then $PQ × F$ = $PQ'× F$

Published on 28 Mar 2026 - 17:04

524

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Distance inequality

Published on 25 Apr 2026 - 16:54

3.2k

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Three Altitudes of a triangle are concurrent

Published on 28 Apr 2026 - 12:37

199

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How to prove $\measuredangle FIB +\measuredangle IBC - \measuredangle FCB = 90^{\circ}$?

Published on 13 Apr 2026 - 20:44

238

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Trisecting an an angle - how to prove?

Published on 11 Apr 2026 - 9:01

126

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How to prove that this is a parellelogram?

Published on 11 Apr 2026 - 23:54

List Question

Construct 60° angle through point, other line in only four compass-and-straightedge steps

Showing the distance between a point $P$ the line determined by a segment $AB$ is $d=\frac{||AP\times AB||}{||AB||}$

When an arbitrary point belongs to a given pyramid?

Arbitrary Dot and Cross Products

New circles associated with the Miquel theorem configuration

Questions about Scale Factor?

A problem to show a certain sum is invariant in some Euclidean geometric configurations.

Clever way to sum these angles?

Area enclosed by a polygon

Show that if $Q'$ is any point on the line of action of $F$, then $PQ × F$ = $PQ'× F$

Distance inequality

Three Altitudes of a triangle are concurrent

How to prove $\measuredangle FIB +\measuredangle IBC - \measuredangle FCB = 90^{\circ}$?

Trisecting an an angle - how to prove?

How to prove that this is a parellelogram?

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