Finding the angles of a triangle Simulation Play

Finding the angles of a triangle – ambiguous case Whiteboard exercise Play

Finding the angles of a triangle – ambiguous case Student activity Play

Finding the area Student activity Play

Finding the area of a triangle Whiteboard exercise Play

Finding the area of a triangle Whiteboard exercise Play

Finding the area of a triangle Whiteboard exercise Play

Finding the area of a triangle Whiteboard exercise Play

Finding the area of the triangle Whiteboard exercise Play

Finding the centre of the incircle of the triangle Simulation Play

Finding the exact values of trigonometric ratios for selected angles Student activity Play

Finding the length of a side of a right-angled triangle Whiteboard exercise Play

Finding the length of the triangle legs Animation Play

Finding the measure of an angle of a right-angled triangle Whiteboard exercise Play

Finding the measures of all angles and sides Animation Play

Finding the perimeter of the triangle Whiteboard exercise Play

Finding triangle areas Whiteboard exercise Play

Finding triangle areas Student activity Play

Forming a square from triangles Animation Play

Formula for the diagonal of a square Animation Play

Formula for the height of the equilateral triangle Animation Play

General polygons Student activity Play

Geometric problem Whiteboard exercise Play

Geometric problems Student activity Play

Geometric problems Student activity Play