Calculate unknown angles and give simple explanations using angles at a point, angles on a straight line, vertically opposite angles, and angle sums of triangles and quadrilaterals.
C4.6.2 Angles in parallel lines
Calculate unknown angles and explain corresponding, alternate and co-interior angle relationships in parallel lines.
C4.6.3 Regular polygon angles
Know and use interior and exterior angle properties and angle sums of regular polygons.