Kinds of triangles – classification by sides Student activity Play

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

Prisms Student activity Play

Proof and demonstration of the formula for the area of a triangle Student activity Play

Properties of diagonals in a parallelogram Animation Play

Properties of diagonals in a rectangle Animation Play

Properties of reflection Student activity Play

Properties of rotation Student activity Play

Property of enlargement – the triangles Whiteboard exercise Play

Recognition of congruent triangles Animation Play

Ruler-and-compass constructions Whiteboard presentation Play

Ruler-and-compass constructions Class activity Play

SAS property of similar triangles Student activity Play

SAS property of similar triangles Whiteboard exercise Play

Sectors and segments Whiteboard exercise Play

Sectors and segments Student activity Play

Sides of the triangles Animation Play

Solving triangles Whiteboard exercise Play

Solving triangles Student activity Play

Solving triangles Whiteboard exercise Play

SSS property of similar triangles Whiteboard exercise Play

SSS property of similar triangles Student activity Play

Subdivision into triangles Simulation Play

Substituting into formulas connected with triangles Whiteboard exercise Play

Symmetrical triangles Animation Play