Yes. A right angle is a two-dimensional feature, so while it can appear in obvious places (the corner of a cube has three of them), it can also appear in places that might not be so intuitive (the sharp corner of a cylindrical wedge has at least two, on the sides).
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Prefices are used to indicate the number of sides, angles, faces or solid angles (in 3d objects).
The diagonals of a square and a rhombus cross at right angles.
Acute angles
A-F
3D shapes have edges, sides, and intersecting points