Symmetry and congruency Whiteboard presentation Play

Symmetry and congruency Class activity Play

The Angle-Side-Angle (ASA) property Whiteboard exercise Play

The angles of isosceles triangles Student activity Play

The Angle–Side–Angle property – observations and generalisation Student activity Play

The area of a triangle Animation Play

The ASA property Animation Play

The congruent trapezium Simulation Play

The congruent triangle Simulation Play

The counterexample Whiteboard exercise Play

The division of a triangle Student activity Play

The division of the triangle Whiteboard exercise Play

The missing angles in special triangles Whiteboard exercise Play

The pairs of congruent figures Simulation Play

The perimeters of the triangles – trigonometric ratios for selected angles Whiteboard exercise Play

The perimeters of the triangles – trigonometric ratios for selected angles Whiteboard exercise Play

The perpendicular bisector in a circle Animation Play

The perpendicular bisector of a line segment Animation Play

The perpendicular bisector of a line segment – a reminder Student activity Play

The polygon made of two triangles Whiteboard exercise Play

The ratio of squares to triangles Whiteboard exercise Play

The rhombus and the circle Whiteboard exercise Play

The rhombus and the circle Student activity Play

The SAS property Animation Play

The Side-Angle-Side (SAS) property Whiteboard exercise Play