A rectangle has 4 right angles and 4 vertices.
11virtices
Eight.
8 vertices.
A kite has four vertices.
4 right angles, no other angles.
It has 6 angles, none of which are right angles.
0 right angles
A regular hexagon as no right angles. An irregular hexagon could have from none to as many as five right angles.
6 faces 8 vertices
A dodecahedron is a polyhedron with between 8 and 20 vertices.
a tetrahedron has 3 Right angles
A square has 4 right angles.