What is a Pyramid?
A solid figure with a polygonal base and triangular faces that meet at a common point
A pyramid is a three-dimensional (3-D) shape that has a flat base (a polygon) and triangular faces that connect at a single point called the apex. The base can be any polygon, such as a triangle, square, or hexagon.
We can categorize the types of pyramids by their base:
- Triangular pyramid (tetrahedron): Has a triangle as its base
- Rectangular, or square, pyramid: Has a square base (like the Great Pyramid of Giza)
- Pentagonal pyramid: Has a pentagon as its base
- And so on
So, how can we tell if a shape is a pyramid?
- They have one base
- Their triangular faces meet at the apex
- They have edges (where faces meet) and vertices (corners)
Pyramids are everywhere! We see them in buildings, art, and design, like ancient pyramids in Egypt or modern glass pyramids in museums.
When Do Students Learn About Pyramids?
Students begin learning about pyramids when exploring 3-D shapes in elementary school, and they later use formulas to calculate their surface area and volume.
Grades 3–5 – Recognizing Pyramids
Students learn to identify pyramids and compare them to other 3-D solids like prisms.
Grades 6+ – Calculating Properties of Pyramids
Students calculate surface area and volume of pyramids and apply these concepts to real-world problems.
