The answer depends upon what is meant by "have 3 triangles?"
The definition of a pyramid is "a solid having a polygonal base, and triangular sides that meet in a point." (Random House Webster's Unabridged Dictionary)
Typical pyramids have a 4-sided quadrilateral base and 4 triangular sides, which means that it can be loosely said to also "have" 3 triangles as well as "have" 4 triangles. A pyramid with a triangular base would also have 3 triangular sides. If we include the shape of the base as a side of the pyramid, then no pyramid would have exactly 3 "sides."
Chat with our AI personalities
3
A triangular pyramid. It has triangles on its 3 sides and a triangle on the bottom for a base.
the answer is pyramid
4 faces are triangles and 1 face is a square the square face is the base of the pyramid
There are 4 triangles that make up a pyramid. 4 on the sides and on the bottom a square or rectangle.