Property of enlargement – the triangles Whiteboard exercise Play

Reasoning with angles Student activity Play

Recognising patterns Student activity Play

Recognition of congruent triangles Animation Play

Regular polygons Animation Play

Regular polygons – the equilateral triangle Student activity Play

Regular polygons – the equilateral triangle Simulation Play

Ruler-and-compass constructions Whiteboard presentation Play

Ruler-and-compass constructions Class activity Play

Ruler-and-compass constructions, locus (2) Class activity Play

Ruler-and-compass constructions, locus (2) Whiteboard presentation Play

SAS property of similar triangles Student activity Play

SAS property of similar triangles Whiteboard exercise Play

Sides of the triangles Animation Play

Solving triangles Whiteboard exercise Play

Solving triangles Whiteboard exercise Play

Solving triangles Student activity Play

SSS property of similar triangles Student activity Play

SSS property of similar triangles Whiteboard exercise Play

Subdivision into triangles Simulation Play

Substituting into formulas connected with triangles Whiteboard exercise Play

Symmetrical triangles Animation Play

Symmetry and congruency Whiteboard presentation Play

Symmetry and congruency Class activity Play

The angles of isosceles triangles Student activity Play