One
3
None.A triangle (not traingle) has 3 vertices (not vetices).
5
8 vertices.
5 vertices
A dodecagon has 12 sides and vertices.
A right angle only has one angle.
A right angle ( _| ) is 90o
i think it has 1 right angle
0, since it is basically many circles put together
A right angle is 90 degrees (90o).90
A right angle has 90 degrees.