An application of the sine and cosine rules Whiteboard exercise Play

An application of the sine and cosine rules Student activity Play

An area problem Student activity Play

An area problem Whiteboard exercise Play

An area problem – visualisation Animation Play

An exterior angle in a triangle Whiteboard exercise Play

An inequality in a coordinate system Animation Play

An interesting formula to find the area of a polygon Student activity Play

An interesting formula to find the area of a polygon Whiteboard exercise Play

An interesting result Student activity Play

An interesting result Whiteboard exercise Play

Angle between an edge and a face Animation Play

Angle bisector Student activity Play

Angle bisector Animation Play

Angle sum of a polygon Whiteboard exercise Play

Angle sum of a polygon Student activity Play

Angle sum of a triangle Simulation Play

Angle sum of a triangle – exercises Student activity Play

Angle sum of a triangle – observation and proof Student activity Play

Angle-Angle property (AA) Whiteboard exercise Play

Angles and sides of triangles Student activity Play

Angles and sides of triangles Whiteboard exercise Play

Angles in a right-angled triangle Whiteboard exercise Play

Angles in a triangle Whiteboard exercise Play

Angles in a triangle Whiteboard exercise Play