Four triangles.
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Square Pyramid, Cube, Triangular Prism, Sphere, Cylinder, Rectangular Pyramid, Rectangular Prism, Cone.
A triangular pyramid has four triangular faces.
triangular pyramid
Two three-dimensional shapes that have at least one triangle as a face include a triangular prism and a pyramid. In a pyramid, the outer faces are triangles, and they come together at one point. A triangular prism is a type of prism with a triangular base.
A square pyramid has a square base and four congruent triangular faces.