List questions from euclidean-geometry

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Show that $MNPQ$ is a square

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97

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Scalar product of two points coordinates

Published on 10 Jan 2019 - 21:21

85

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Show that if $AR$ intersects midperpendicular of $MN$ at $X$, then $X\in(I)$

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276

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Diagonal calculation in a 3D square

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44

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Euclidean space: $k$ points in $\mathbb{R}^n$

Published on 11 Jan 2019 - 17:32

509

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What's the precise definition of coordinates in Euclidean space?

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671

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Ratio of Volume of sphere to Volume of cube

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43

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Find a ratio of triangle's height segment

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181

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Get direction vector of a line from a point and its rotation.

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242

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if triangle QRS has incenter, what is the incenter of triangle xyz

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63

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If AH and BG are angle bisectors, how would I find IJ?

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953

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Proving two lines are parallel with intersections and midpoints

Published on 15 Jan 2019 - 4:02

382

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Finding angles of $\triangle ABC$: $CA=CB$, $BD$ is angle bisector and $BD+DC=AB$.

Published on 28 Mar 2026 - 20:57

90

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Prove that: BD/DC = AR/AS

Published on 15 Jan 2019 - 10:32

List Question

Isometries of the Plane, Euclidean space $R^3$ and isometries of the Platonic polyhedra.

Show that $MNPQ$ is a square

Scalar product of two points coordinates

Show that if $AR$ intersects midperpendicular of $MN$ at $X$, then $X\in(I)$

Diagonal calculation in a 3D square

Euclidean space: $k$ points in $\mathbb{R}^n$

What's the precise definition of coordinates in Euclidean space?

Ratio of Volume of sphere to Volume of cube

Find a ratio of triangle's height segment

Get direction vector of a line from a point and its rotation.

if triangle QRS has incenter, what is the incenter of triangle xyz

If AH and BG are angle bisectors, how would I find IJ?

Proving two lines are parallel with intersections and midpoints

Finding angles of $\triangle ABC$: $CA=CB$, $BD$ is angle bisector and $BD+DC=AB$.

Prove that: BD/DC = AR/AS

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