Prisms – parallel faces and perpendicular faces Student activity Play

Properties of diagonals in a rhombus Animation Play

Properties of diagonals in a square Animation Play

Properties of kites Animation Play

Properties of trigonometric functions of a general angle (1) Whiteboard presentation Play

Properties of trigonometric functions of a general angle (1) Class activity Play

Properties of trigonometric functions of a general angle (2) Class activity Play

Properties of trigonometric functions of a general angle (2) Whiteboard presentation Play

Property of a perpendicular bisector Animation Play

Proving identity for the tangent Whiteboard exercise Play

Quadrilaterals with incircle Animation Play

Range of trigonometric functions Whiteboard exercise Play

Range of trigonometric functions Student activity Play

Reciprocals of basic trigonometric ratios Student activity Play

Recover the function Student activity Play

Recover the function using a gradient and a tangent Whiteboard exercise Play

Recover the function using a tangent Whiteboard exercise Play

Reduction formulas due to periodicity Whiteboard exercise Play

Reduction formulas due to periodicity Student activity Play

Reduction formulas for the tangent Animation Play

Regular polygons – the dodecagon Student activity Play

Regular polygons – the square Student activity Play

Regular polygons – the square Simulation Play

Rewriting the sine using double-angle formulas for the tangent Animation Play

Ruler-and-compass constructions Class activity Play