<Dl> <Dd> (3, 3), (4, 3), (3, 4), (5, 3), (3, 5). </Dd> </Dl> <Dd> (3, 3), (4, 3), (3, 4), (5, 3), (3, 5). </Dd> <P> There are a number of angles associated with each Platonic solid . The dihedral angle is the interior angle between any two face planes . The dihedral angle, θ, of the solid (p, q) is given by the formula </P> <Dl> <Dd> sin ⁡ θ 2 = cos ⁡ (π q) sin ⁡ (π p). (\ displaystyle \ sin (\ theta \ over 2) = (\ frac (\ cos \ left ((\ frac (\ pi) (q)) \ right)) (\ sin \ left ((\ frac (\ pi) (p)) \ right))).) </Dd> </Dl>

A solid figure that has only one vertex is called