Calculating the area of a polygon Student activity Play

Circle circumscribed about a quadrilateral Animation Play

Circle circumscribed about a quadrilateral Animation Play

Circle inscribed into a quadrilateral Simulation Play

Circle inscribed into a quadrilateral Student activity Play

Circles inscribed and circumscribed Whiteboard presentation Play

Circles inscribed and circumscribed Class activity Play

Circles inscribed and circumscribed around a trapezium Student activity Play

Circles inscribed into quadrilaterals Student activity Play

Circles inscribed into quadrilaterals Simulation Play

Circumscribed polygons Animation Play

Congruent figures Simulation Play

Congruent figures Student activity Play

Construction of a circle circumscribed about a quadrilateral Simulation Play

Construction of a circle circumscribed about a quadrilateral Student activity Play

Construction of a circle inscribed into a quadrilateral Animation Play

Cyclic quadrilaterals Simulation Play

Cyclic quadrilaterals Student activity Play

Cyclic quadrilaterals Whiteboard exercise Play

Determining angles Whiteboard exercise Play

Diagonals of polygons Whiteboard exercise Play

Diagonals of polygons Student activity Play

Dividing into a given ratio Student activity Play

Drawing shapes in a graphic calculator Animation Play

Expressions for angles Student activity Play