List questions from 3d | MathQA

If there is a bijection between $\mathbb R$ and $\mathbb R^3$, why is it said that it takes 3 numbers to determine a point in three-dimensional space?

Published on 14 Apr 2026 - 13:30

Finding 3D rotation matrix given original and final vector

Published on 13 Apr 2026 - 18:22

Volume of the coffee mug

Published on 17 Apr 2026 - 18:01

Volume of sum of a cube and a sphere

Published on 17 Apr 2026 - 18:06

Honeycombs of Minkowski Space

Published on 10 Apr 2026 - 7:27

Finding point in a plane at fixed distances from 2 other points in the plane

Published on 17 Apr 2026 - 11:10

Finding the intersection of a paraboloid and an ellipse in 3d space

Published on 11 Apr 2026 - 12:56

Equation of a line orthogonal to two other lines

Published on 12 Apr 2026 - 14:13

How to check if a surface normal faces inwards or outwards an ellipsoid?

Published on 26 Mar 2026 - 11:07

Rotation Around an Arbitrary Axis

Published on 14 Apr 2026 - 10:14

Equally spaced vectors in $\mathbb{R}^3$

Published on 13 Apr 2026 - 21:16

Finding a plane, given its inclination, a vector and the angle between the given vector and an unknown vector in the plane.

Published on 14 Apr 2026 - 17:18

what is the projection of point in 3d plane

Published on 12 Apr 2026 - 0:46

orientation difference between two triangles in 3D space

Published on 10 Apr 2026 - 10:51

Given the equations of two spheres, how do you find the plane of their ntersection?

Published on 12 Apr 2026 - 9:23