Answer :

A cube is a geometric three-dimensional solid object. It constitutes 6 square faces, sides and three meeting at each vertex. It is the only regular hexahedron.  A cube has a fixed number of perpendicular angles. Typically, it has 8 perpendicular angles and each spigolo or corner has 3 angles. Since it has 8 perpendicular (⊥) angles and 3 angles in each corner, it makes up 24 angles.
 All 8 ⊥ angles and 3 angles in each corner mean: 8*3=24.

Therefore, a cube has 24 right angles.