# 10 Examples of Pyramids

Pyramids are cool 3D shapes. They start with a flat shape at the bottom, like a **square** or triangle. Then, they have sides that slant and come together to a point at the top. This pointy top is called the apex.

In this article, we will discuss ten examples of pyramids in **mathematics**.

**Examples of Pyramids**

These are 10 examples of pyramids.

**1: Square Pyramid**

Square pyramid has a square base and triangular faces that converge at an apex. Its volume can be calculated using the formula V = (1/3) * base area * height.

**2: Triangular Pyramid**

Triangular pyramid has a triangular base and triangular faces that meet at an apex. Its volume is calculated similarly to a square pyramid.

**3: Pentagonal Pyramid**

Pentagonal pyramid has a pentagonal base and triangular faces. Its volume can be calculated based on the base area and height.

**4: Hexagonal Pyramid**

Hexagonal pyramid has a hexagonal base and triangular faces. Its volume can be found using the base area and height.

**5: Regular Pyramid**

Regular pyramid has a base with all sides of equal length and congruent angles. It has a unique apex and is commonly used in geometry.

**6: Oblique Pyramid**

Oblique pyramid has an irregular base, and its apex is not directly above the center of the base. It is often encountered in practical geometry problems.

**7: Egyptian Pyramid**

Egyptian pyramids, such as the Great Pyramid of Giza, are square pyramids with historical and cultural significance.

**8: Frustum of a Pyramid**

Frustum of a pyramid is the portion that remains after cutting off the top with a smaller, similar pyramid. It has unique volume and surface area formulas.

**9: Trirectangular Tetrahedron**

This pyramid is formed by cutting a cube with a plane that goes through three non-adjacent vertices. It is a unique example of a pyramid.

**10: Pyramid Number**

In number theory, a pyramid number is a figurate number that represents a pyramid with a triangular base and a given number of layers.

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