Mathematics for IGCSE & O level - Mensuration (Section 13 - No. 46)
Which shapes are considered to be pyramids?
A triangular pyramid (tetrahedron).
A cone.
A cube.
A square-based pyramid.
स्पष्टीकरण
Pyramids have a base and triangular faces that meet at a point (apex). Cones are similar with a circular base.