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None. A triangle based pyramid is a 4-sided solid (a tetrahedron), and has no parallel sides.
A triangular-based pyramid, also known as a tetrahedron, has no pairs of parallel faces. This is because all four faces (the triangular base and the three triangular sides) intersect with each other, and none of them are parallel to one another.
A triangular-based prism has five flat faces: two triangular faces at the top and bottom, and three rectangular faces connecting the corresponding sides of the triangles. The triangular faces are parallel to each other, while the rectangular faces form the sides of the prism.
A triangular based pyramid has no parallel lines but it does have 4 faces, 6 edges and 4 vertices.
Depends if it's a square based Pyramid or a Triangular based Pyramid. Square based has 5 sides, Triangular based has 4 sides. Hope I could help!
A triangular-based pyramid, also called a tetrahedron, has no parallel faces, but has 4 faces, 6 edges and 4 vertices
A triangular based pyramid has 4 sides. 3 triangle sides and 1 Square base
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A triangular based pyramid has zero pairs of parallel faces. In a triangular based pyramid, all three faces of the base are not parallel to the apex, which means there are no pairs of parallel faces in this type of shape.
four!
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