Kinds of triangles – classification by angles Simulation Play

Kinds of triangles – classification by angles Student activity Play

Kinds of triangles – classification by angles and sides Simulation Play

Kinds of triangles – classification by sides Student activity Play

Kinds of triangles – classification by sides Simulation Play

Property of enlargement – the triangles Whiteboard exercise Play

Recognition of congruent triangles Animation 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

The missing angles in special triangles Whiteboard exercise 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 polygon made of two triangles Whiteboard exercise Play