Mutual position of lines and interior angles in a triangle Whiteboard presentation Play

Obtuse angles Student activity Play

Obtuse angles Whiteboard exercise Play

Opposite angles of a parallelogram Animation Play

Opposite numbers Student activity Play

Opposite numbers Whiteboard exercise Play

Opposite vectors Animation Play

Pairs of opposite vectors Whiteboard exercise Play

Parallel lines and alternate angles Student activity Play

Parallel lines and alternate angles Whiteboard exercise Play

Parallel lines and corresponding angles Student activity Play

Parallel lines and corresponding angles Whiteboard exercise Play

Parallelograms, rhombuses and trapeziums – properties of angles Student activity Play

Parallelograms, rhombuses and trapeziums – properties of angles Whiteboard exercise Play

Planes in the Cartesian coordinate system of 3-dimensional space Student activity Play

Points and their positions Whiteboard exercise Play

Population and sample Student activity Play

Population and sample Whiteboard exercise Play

Problems involving properties of angles and parallel lines Whiteboard presentation Play

Problems involving properties of angles and parallel lines Class activity Play

Properties of angles in a trapezium Animation Play

Quadrantal angles Student activity Play

Quadrantal angles Whiteboard exercise Play

Radian measure of angles Animation Play

Reasoning with angles Student activity Play