Symmetry and congruency Class activity Play

The angles of isosceles triangles Student activity Play

The area of a triangle Animation Play

The equal expressions Whiteboard exercise Play

The equal numbers Whiteboard exercise Play

The equal probabilities Whiteboard exercise Play

The expressions of equal value Whiteboard exercise 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

The ratio of squares to triangles Whiteboard exercise Play

The sides of isosceles triangles Student activity Play

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

The sum of a convergent geometric series – triangles Whiteboard exercise Play

The symmetry of isosceles triangles Animation Play

The symmetry of triangles Whiteboard exercise Play

The triangles under enlargement Whiteboard exercise Play

Triangles Class activity Play

Triangles Whiteboard exercise Play

Triangles Whiteboard exercise Play

Triangles Student activity Play

Triangles Whiteboard presentation Play

Triangles Whiteboard exercise Play

Triangles Student activity Play