If you stand at a point and turn right, that's clockwise (the same way
that hands on a clock will turn). Turn to your left and that's
A full turn is 4 right angles, a half turn is 2 right angles and a quarter
turn is 1 right angle.
This shows a quarter turn clockwise.
This shows a half turn anti-clockwise.
This shows a three quarter turn clockwise.
This shows a three quarter turn anti-clockwise.