A triangular pyramid has four triangular faces.
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a triangular based pyramid has 4 faces.
A pyramid is a generic term and can have any number (>3) of plane faces. A triangular pyramid has 4 faces, a rectangular one has 5, and so on. A pyramid whose base has n sides has n+1 faces.
A triangular based pyramid has 4 faces, 6 edges and 4 vertices
1. triangular prism it has 2 triangular faces. 2.triangular base pyramid, it has 5 triangular faces. 3. square base pyramid, it has 4 triangular faces.
There are no triangular prisms in faces. Faces are 2-d shapes and these cannot contain 3-d shapes in them.