A square circumscribed about a circle Student activity Play

A square circumscribed about a circle Whiteboard exercise Play

A symmetrical triangle on non-squared paper Student activity Play

A symmetrical triangle on squared paper Student activity Play

A tangent to a circle Whiteboard exercise Play

A tangent to a circle Student activity Play

A triangle and circles Student activity Play

A triangle and circles Simulation Play

A virtual car Simulation Play

Addition and subtraction of parallel vectors Student activity Play

Addition of parallel vectors Whiteboard exercise Play

Aerial Animation Play

Algebraic solutions Whiteboard exercise Play

Algebraic solutions Student activity Play

An angle and points on the circle Student activity Play

An angle and points on the circle Whiteboard exercise Play

An inscribed angle Student activity Play

An isosceles trapezoid and a circle Whiteboard exercise Play

An isosceles trapezoid and a circle Student activity Play

Angle bisector Student activity Play

Angle bisector Animation Play

Angle in a cone Animation Play

Angles in a circle Student activity Play

Angles in a circle Whiteboard exercise Play

Another form of the equation of the circle Animation Play