List questions from euclidean-geometry

218

Views

If $G:\mathbb{R}^{3}\rightarrow \mathbb{R}^{3}$ is distance-preserving, $\exists p_{0}$ and a linear isometry $F$ such that $G(p)=F(p)+p_{0}.$

Published on 11 Mar 2026 - 9:50

49

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Calculate the optimal ratio AX/AB

Published on 20 Oct 2019 - 21:57

410

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definition of affine normed space

Published on 26 Mar 2026 - 15:17

175

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What are the angles of this triangle?

Published on 02 Apr 2026 - 18:17

245

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Prove that $\angle ABC <$ $ 84^\circ$.

Published on 22 Oct 2019 - 0:13

432

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Euclidean space is an affine space

Published on 26 Mar 2026 - 16:57

354

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computation of the cross ratio

Published on 26 Mar 2026 - 20:12

201

Views

Counting "lattice points" on a circle of radius $\sqrt{N}$

Published on 25 Mar 2026 - 22:10

71

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How to form a straight line with only a set of X coordinates?

Published on 01 Apr 2026 - 11:24

541

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is it possible to transform a vector from a space to another one?

Published on 25 Mar 2026 - 13:05

46

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Postulate V implies equidistant postulate

Published on 23 Oct 2019 - 13:47

149

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Integration and Euclidean geometry

Published on 24 Oct 2019 - 8:25

33

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Sufficient conditions to use a “nine-point circle” to determine the ortho-center.

Published on 25 Oct 2019 - 15:56

61

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Find $\lambda $ such $B,M$ and $N$ are colinear points?

Published on 02 Apr 2026 - 19:44

233

Views

Prove that concurrent lines in an arbitrary hexagon

Published on 28 Mar 2026 - 2:03

List Question

If $G:\mathbb{R}^{3}\rightarrow \mathbb{R}^{3}$ is distance-preserving, $\exists p_{0}$ and a linear isometry $F$ such that $G(p)=F(p)+p_{0}.$

Calculate the optimal ratio AX/AB

definition of affine normed space

What are the angles of this triangle?

Prove that $\angle ABC <$ $ 84^\circ$.

Euclidean space is an affine space

computation of the cross ratio

Counting "lattice points" on a circle of radius $\sqrt{N}$

How to form a straight line with only a set of X coordinates?

is it possible to transform a vector from a space to another one?

Postulate V implies equidistant postulate

Integration and Euclidean geometry

Sufficient conditions to use a “nine-point circle” to determine the ortho-center.

Find $\lambda $ such $B,M$ and $N$ are colinear points?

Prove that concurrent lines in an arbitrary hexagon

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