Exterior angle of a triangle – observation and proof Student activity Play

Exterior angle of a triangle – proof Animation Play

Exterior angles Animation Play

Exterior angles in a triangle Simulation Play

Exterior angles in a triangle – proof Animation Play

Exterior angles of a triangle Student activity Play

Figures in a coordinate system Student activity Play

Figures in coordinates – part 1 Student activity Play

Figures symmetrical with respect to a point Student activity Play

Finding angle Whiteboard exercise Play

Finding angle – obtuse triangle Whiteboard exercise Play

Finding angles Student activity Play

Finding angles in a triangle Student activity Play

Finding angles in a triangle Whiteboard exercise Play

Finding areas Whiteboard exercise Play

Finding areas Student activity Play

Finding exterior angle in a triangle Whiteboard exercise Play

Finding height Whiteboard exercise Play

Finding heights Student activity Play

Finding images of figures under reflection Student activity Play

Finding side Whiteboard exercise Play

Finding sides Student activity Play

Finding sides Student activity Play

Finding sides in the triangle Whiteboard exercise Play

Finding surds Student activity Play