Angles in a cyclic quadrilateral Whiteboard exercise Play

Are all trigonometric functions really necessary? Student activity Play

Are the two triangles similar? Animation Play

Are two polygons similar? Animation Play

Area of a square Student activity Play

Area of figures Whiteboard exercise Play

Area of rectangles Class activity Play

Area of rectangles Whiteboard presentation Play

Area of the floor Whiteboard exercise Play

Areas of figures Student activity Play

Areas of figures Whiteboard exercise Play

Areas of geometric figures Student activity Play

Areas of images of figures under enlargement Student activity Play

Areas of images of figures under enlargement Whiteboard exercise Play

Areas of rectangles – reminder Student activity Play

Areas of similar figures Student activity Play

Areas of the figures Whiteboard exercise Play

Areas under enlargement Animation Play

Axially symmetric figures Animation Play

Blot and symmetry Animation Play

Circle inscribed into a parallelogram Simulation Play

Composing transformations Student activity Play

Composition of translations Student activity Play

Congruency of figures Whiteboard exercise Play

Congruency of triangles and other figures Student activity Play