IN MATH: 1. n. a solid having triangular sides and any polygon as a base. The pyramid comes to a point called the apex or called a vertex. EX. A pyramid is named by the shape of its base. Auxiliary or helping lines are often included in a drawing of a pyramid to improve clarity.

IN ENGLISH: 1. as defined above. 2. One of the large buildings of this shape located in Egypt. EX. I'd love to explore a pyramid's interior.
APPLICATION: See list 160.
1. What's the volume of a square pyramid with a base edge of 4 cm and a height of 12 cm?
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