1. 10-5 Surface Area of Pyramids Slant height (ℓ) of a pyramid is the height of the triangular faces. It goes along the side of the pyramid. Also called the lateral height. The normal height (h) of a pyramid is the distance from the vertex to the center of the base. Lateral Height Normal Height

2. Formulas Lateral Surface Area: ½Pℓ Total Surface Area: ½Pℓ + B

3. Example Find the lateral surface area and total surface area of the pyramid.

4. Example Find the lateral and total surface area of the pyramid.