Regular square pyramid

A regular square pyramid is a right pyramid with a square base and four triangular faces.

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An entertaining game about different views of spatial objects.

Császár polyhedron

The Császár polyhedron is a nonconvex polyhedron with 14 triangular faces.

Plotting points at a given distance from a line

Line e is given. Plot point P at a distance of 2 cm from line e.

Volume of spheres (Cavalieri´s principle)

Calculating the volume of a sphere is possible using an appropriate cylinder and cone.

Three-dimensional Cartesian coordinate system

3-dimensional Cartesian coordinate system with illustrations and exercises that develop...

The Cartesian and the polar coordinate system

Practise how to define a specific location using coordinate systems.

Plotting a 60° angle

To plot a 60° angle, we refer you back to the plotting of an equilateral triangle.

The connection between the volume of a square pyramid and the volume of a prism

In this experiment we prove that the volume of the prism is three times the volume of the square...

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