Line of reflection symmetry Whiteboard exercise Play

Match a triangle Student activity Play

Miscellaneous problems Student activity Play

More constructions Student activity Play

Other quadrilaterals Student activity Play

Parallelograms and trapeziums Student activity Play

Parallelograms and trapeziums Whiteboard exercise Play

Parallelograms, rectangles, rhombuses and squares – properties of diagonals Student activity Play

Parallelograms, rectangles, rhombuses and squares – properties of diagonals Whiteboard exercise Play

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

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

Perimeters of geometric figures Student activity Play

Proofs and assumptions Student activity Play

Properties of angles in a trapezium Animation Play

Properties of reflection Whiteboard exercise Play

Properties of reflection Student activity Play

Pythagorean triples Student activity Play

Quadrilaterals Whiteboard exercise Play

Radar stations Student activity Play

Right-angled triangle Animation Play

Right-angled triangle or not? Animation Play

Sides of the trapezium Animation Play

Substituting into formulas connected with a right-angled triangle Student activity Play

The angles in a parallelogram and a trapezium Animation Play

The angles of a trapezium Whiteboard exercise Play