The triangle inscribed in a circle Whiteboard exercise Play

The triangle under enlargement Animation Play

The triangles under enlargement Whiteboard exercise Play

Theorem – assumptions and claim Whiteboard exercise Play

Theorem – assumptions and claim Student activity Play

Theorems and their assumptions in geometry Student activity Play

Three-dimensional perception Animation Play

Three-dimensional vision Student activity Play

Three-dimensional vision Whiteboard exercise Play

Transform a triangle into a rectangle Student activity Play

Transform a triangle into a rectangle Simulation Play

Transformation of a triangle Animation Play

Transformations Student activity Play

Translation, rotation, reflection and symmetry Animation Play

Trapezium Student activity Play

Trapezium Whiteboard exercise Play

Triangle Animation Play

Triangle Student activity Play

Triangle Student activity Play

Triangle Whiteboard exercise Play

Triangle Whiteboard exercise Play

Triangle and circle Animation Play

Triangle and its area Simulation Play

Triangle and its area Simulation Play

Triangle and its area Simulation Play