The angles of an isosceles triangle Whiteboard exercise Play

The angles of isosceles triangles Student activity Play

The angles that are multiples of 45° Animation Play

The angles that are multiples of 60° Animation Play

The appropriate range of angles Whiteboard exercise Play

The arc subtending an inscribed angle Simulation Play

The arc subtending the central angle Simulation Play

The area of a regular hexagon Whiteboard exercise Play

The area of a triangle Student activity Play

The area of a triangle Animation Play

The area of an equilateral triangle Student activity Play

The area of the parallelogram Whiteboard exercise Play

The area of the quadrilateral Whiteboard exercise Play

The area of the regular pentagon Whiteboard exercise Play

The area of the triangle Whiteboard exercise Play

The base angles and the vertex angle Whiteboard exercise Play

The bonds in the methanal molecule Animation Play

The camera Whiteboard exercise Play

The camera Student activity Play

The central angle of a regular polygon Student activity Play

The central angle of a regular polygon Whiteboard exercise Play

The cosine of an arbitrary angle Simulation Play

The cosine of an arbitrary angle Student activity Play

The cosine rule Whiteboard presentation Play

The cosine rule Class activity Play