The line and the circle Whiteboard exercise Play

The lunes of Hippocrates Student activity Play

The measure of an inscribed angle Whiteboard exercise Play

The missing degree measures Whiteboard exercise Play

The moon-shaped figures Animation Play

The normal Whiteboard presentation Play

The normal Class activity Play

The normal and the tangent to a circle Whiteboard exercise Play

The normal and the tangent to a circle Student activity Play

The normal and the tangent to a circle Animation Play

The normal to a curve Student activity Play

The normal to a curve Whiteboard exercise Play

The normal to the circle Animation Play

The number of common points of the coordinate axes and the circle Whiteboard exercise Play

The number of solutions Animation Play

The number π Whiteboard exercise Play

The number π and the formula for the circumference of a circle Student activity Play

The perimeter of the triangle and the diameter of the big circle Animation Play

The perpendicular bisector Student activity Play

The perpendicular bisector Whiteboard exercise Play

The perpendicular bisector in a circle Animation Play

The perpendicular bisector of a line segment – a reminder Student activity Play

The perpendicular bisectors Simulation Play

The points on the circumference of a circle Whiteboard exercise Play

The radius and the diameter of a circle Student activity Play