# Types of Pyramids

### Regular Pyramid

The base of a regular pyramid is a regular polygon and its faces are equally sized triangles.

### Irregular Pyramid

The base of an irregular pyramid is an irregular polygon, and as a result, its faces are not equally sized.

### Convex Pyramid

A convex pyramid has a convex polygon as its base.

### Concave Pyramid

A concave pyramid has a concave polygon as its base.

### Right Pyramid

A right pyramid has isosceles triangles as its faces and its apex lies directly above the midpoint of the base.

### Oblique Pyramid

An oblique pyramid does not have all isosceles triangles as its lateral sides.

# Types of Pyramids by their Base

### Triangular Pyramid

The base is a triangle.

### Square Pyramid

The base is a square.

### Pentagonal Pyramid

The base is a pentagon.

### Hexagonal Pyramid

The base is a hexagon.