The sum of angles in 3D is not 90 while in 2D it is?

Video Game Physics Tutorial - Part I: Rigid Body Dynamics

2-Dimensional Geometric Shapes

The projection point geodesic grid algorithm for meshing the sphere - ScienceDirect

3D Rotations and Euler angles in Python – Meccanismo Complesso

2D and 3D Shapes: Definition, Properties, Formulas, Types of 3D Shapes

Right Prism Definition, Geometry & Examples

Fourier transform-based method for quantifying the three-dimensional orientation distribution of fibrous units

Quadrilateral Shapes and Facts

Phased Array Antenna Patterns—Part 1: Linear Array Beam Characteristics and Array Factor

Mensuration formula - 2D & 3D shapes and practice questions!

Three Dimensional Vectors and Dot Product

Nets of solids (3-D shapes) – GeoGebra

The maximum number of right angles in a polygon - Math Central

CoordinateTransformations