Application of the Pythagorean theorem in 2-D Class activity Play

Application of the Pythagorean theorem in 2-D Whiteboard presentation Play

Checking the triangle in the coordinate system Whiteboard exercise Play

Circle properties Whiteboard presentation Play

Circle properties Class activity Play

Classification of triangles by sides Animation Play

Constructing an equilateral triangle Simulation Play

Dividing an equilateral triangle Animation Play

Dividing an equilateral triangle into nine congruent triangles Whiteboard exercise Play

Drawing an equilateral triangle Animation Play

Drawing an equilateral triangle inscribed in a circle Whiteboard exercise Play

Drawing an equilateral triangle inscribed in a circle Student activity Play

Equilateral triangles Whiteboard exercise Play

Exact values of trigonometric ratios for selected angles Animation Play

Exact values of trigonometric ratios for selected angles Student activity Play

Examples of regular polygons Student activity Play

Formula for the height of the equilateral triangle Animation Play

Heron's formula for the equilateral triangle Whiteboard exercise Play

Heron's formula for the triangle Student activity Play

How to construct an equilateral triangle Student activity Play

How to construct an equilateral triangle Animation Play

Kinds of triangles – classification by angles Student activity Play

Kinds of triangles – classification by angles and sides Simulation Play

Kinds of triangles – classification by sides Simulation Play

Kinds of triangles – classification by sides Student activity Play