Question

Properties of sphere

score 732 · Answer 1 · 2014-05-12 04:59:35

732

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Properties of sphere

Published on 12 May 2014 - 4:59

score 558 · Answer 2 · 2026-03-25 06:30:47

558

Views

Reflect the plane in the $x$-axis, and then in the line $y = \frac12$. Show that the resulting isometry sends $(x,y)$ to $(x,y+1)$

Published on 25 Mar 2026 - 6:30

score 859 · Answer 3 · 2026-03-28 05:23:25

859

Views

We can tell that f is not a translation or glide reflection (hence, it must be a rotation). How?

Published on 28 Mar 2026 - 5:23

score 8.3k · Answer 4 · 2014-05-16 01:11:11

8.3k

Views

How to prove ${\bf u}\cdot{\bf v}=|{\bf u}|\cdot|{\bf v}|\cos\theta$, if $\theta$ is the angle between $|{\bf u}|$ and $|{\bf v}|$

Published on 16 May 2014 - 1:11

score 2.1k · Answer 5 · 2014-05-16 02:18:06

2.1k

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What is the geometric meaning of the transformation of R2/R3 when every vector is multiplied by −1? Is it a rotation?

Published on 16 May 2014 - 2:18

score 1.1k · Answer 6 · 2014-05-16 04:39:53

1.1k

Views

Average Degree of a Random Geometric Graph

Published on 16 May 2014 - 4:39

score 639 · Answer 7 · 2014-05-16 16:10:10

639

Views

If $d$ is a metric, is $d(x,y)/(1+d(x,0)+d(y,0))$ a metric?

Published on 16 May 2014 - 16:10

score 1k · Answer 8 · 2014-05-17 10:30:19

1k

Views

Number of Lines formed by joining points formed by the intersection of lines in a plane

Published on 17 May 2014 - 10:30

score 212 · Answer 9 · 2014-05-17 17:36:21

212

Views

How to prove $C=2πr$?

Published on 17 May 2014 - 17:36

score 3.6k · Answer 10 · 2014-05-18 17:49:17

3.6k

Views

How to distribute a set number of points evenly in a rectangle?

Published on 18 May 2014 - 17:49

score 6.8k · Answer 11 · 2026-03-30 05:32:16

6.8k

Views

Area of Intersection of Circle and Square

Published on 30 Mar 2026 - 5:32

score 1.3k · Answer 12 · 2014-05-19 08:52:05

1.3k

Views

What is the smallest possible angle of this polygon?

Published on 19 May 2014 - 8:52

score 1.5k · Answer 13 · 2026-03-25 18:45:06

1.5k

Views

Smallest square containing a given triangle

Published on 25 Mar 2026 - 18:45

score 697 · Answer 14 · 2026-03-25 04:43:47

697

Views

Why are polyhedra related to the prime numbers 2, 3 and 5, but not to the prime number 7?

Published on 25 Mar 2026 - 4:43

score 247 · Answer 15 · 2026-03-27 22:53:00

247

Views

Area sum of inner triangles is half of the equilateral triangle

Published on 27 Mar 2026 - 22:53

List Question

Properties of sphere

Reflect the plane in the $x$-axis, and then in the line $y = \frac12$. Show that the resulting isometry sends $(x,y)$ to $(x,y+1)$

We can tell that f is not a translation or glide reflection (hence, it must be a rotation). How?

How to prove ${\bf u}\cdot{\bf v}=|{\bf u}|\cdot|{\bf v}|\cos\theta$, if $\theta$ is the angle between $|{\bf u}|$ and $|{\bf v}|$

What is the geometric meaning of the transformation of R2/R3 when every vector is multiplied by −1? Is it a rotation?

Average Degree of a Random Geometric Graph

If $d$ is a metric, is $d(x,y)/(1+d(x,0)+d(y,0))$ a metric?

Number of Lines formed by joining points formed by the intersection of lines in a plane

How to prove $C=2πr$?

How to distribute a set number of points evenly in a rectangle?

Area of Intersection of Circle and Square

What is the smallest possible angle of this polygon?

Smallest square containing a given triangle

Why are polyhedra related to the prime numbers 2, 3 and 5, but not to the prime number 7?

Area sum of inner triangles is half of the equilateral triangle

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