Parallel lines and corresponding angles Student activity Play

Regular polygons and their exterior angles Whiteboard exercise Play

Surface area of a ring Animation Play

The exterior and interior angles of a quadrilateral Whiteboard exercise Play

The exterior and interior angles of a triangle Whiteboard exercise Play

The exterior angle of a regular polygon Student activity Play

The exterior angle of a regular polygon – proof (1) Animation Play

The exterior angle of a regular polygon – proof (2) Animation Play

The exterior angles of a polygon Student activity Play

The exterior angles of an n-sided polygon Whiteboard exercise Play

The exterior angles of polygons Whiteboard exercise Play

The measure of the angles Whiteboard exercise Play

The missing exterior angles Whiteboard exercise Play

The sum of the exterior angles Animation Play

The sum of the exterior angles Simulation Play

The sum of the exterior angles Student activity Play

The sum of the exterior angles in an n-sided polygon Whiteboard exercise Play

The sum of the exterior angles of a convex pentagon Animation Play

The sum of the exterior angles of a convex polygon Animation Play

The sum of the exterior angles of a convex polygon Student activity Play

The sum of the exterior angles of a hexagon Whiteboard exercise Play

The sum of the exterior angles of a pendecagon Whiteboard exercise Play

Triangles Class activity Play

Triangles Whiteboard presentation Play