The sheet provides a clear breakdown of the core formulas you’ll use:

• Perimeter: The formula for finding the total distance around the outside of a triangle.

• Area: The formula for calculating the space inside a triangle. This is often based on the base and height of the triangle.

• Types of Triangles: The sheet may also include specialized formulas for different types of triangles, such as the Pythagorean theorem for right-angled triangles, which relates the lengths of the sides.