How to check directly whether two triangles are congruent Whiteboard exercise Play

How to check directly whether two triangles are congruent Student activity Play

Inscribed circles, circumscribed polygons Student activity Play

Interior and exterior angles in polygons Whiteboard presentation Play

Interior and exterior angles in polygons Class activity Play

Parallel and perpendicular faces in the prism Animation Play

Parallelograms, rectangles, rhombuses and squares – properties of diagonals Student activity Play

Polygons Student activity Play

Polygons Whiteboard exercise Play

Polygons Slideshow Play

Polygons and regular polygons Class activity Play

Polygons and regular polygons Whiteboard presentation Play

Prisms Student activity Play

Prisms – parallel faces and perpendicular faces Student activity Play

Programming to draw regular polygons Simulation Play

Programming to draw regular polygons Student activity Play

Proof and demonstration of the formula for the area of a triangle Student activity Play

Properties of diagonals in a parallelogram Animation Play

Properties of diagonals in a rectangle Animation Play

Properties of reflection Student activity Play

Properties of rotation Student activity Play

Properties of similar polygons Student activity Play

Properties of similar polygons Whiteboard exercise Play

Recognition of congruent triangles Animation Play

Regular and irregular polygons Student activity Play