### Pyramid

Pyramid is a three-dimensional figure with triangular sides and polygonal base.
So, we have, for example, the pyramids: triangular, rectangular, hexagonal and decagonal.

In the Egypt, are the most famous and ancient pyramids. The pyramid of Giza, with a square base, is the
largest and know as one of the seven ancient wonders of the world .

All regular pyramids has a regular polygon as a base. A regular polygon has equal sides.

When the pyramid height has its points at the apex and midpoint of base, the pyramid is right. On the contrary is oblique.

Pyramid elements:

• Lateral face: each of the side triangles forming the pyramid;

• Base: a polygon that does not touch on the top of the pyramid;

• Vertex: junction of each pair of side edges. Also called apex;

• Height: distance between the horizontal plane of the base to the apex of the pyramid;

• Edges: line segment where two sides meet;

• Slant height: distance from the vertex to the midpoint of the side of the base. The apothem is also the height of the sides.

How to calculate the elements of a **Pyramid.**

### Related Topics

Right Triangle Isosceles Triangle Equilateral Triangle Scalene Triangle Square Rectangle Trapezium Right-Angled Trapezoid Isosceles Trapezoid Rhombus Regular polygon Polygon names Circle Pyramid Triangle pyramid Square pyramid Rectangular pyramid Cube Prism Rectangle Prism Cone Cylinder Sphere