1. PYRAMIDS

2. A pyramid is a 3D figure with a polygon as its base and lateral faces are identical isosceles triangles meeting at a point, a vertex. vertex Triangular face Polygonal base 3. Types of pyramids. We name the pyramids adding the name of the polygon that forms its base to pyramid. The base is a pentagon PENTAGONAL PYRAMID 4. TRIANGULAR PYRAMID It has got 4 Faces: The 3 Side Faces are Triangles The Base is also a Triangle It has got 4 vertices It has 6 Edges It is also a Tetrahedron 5. SQUARE PYRAMID It has got 5 Faces: The 4 Side Faces are Triangles The Base is a Square It has got 5 vertices It has 8 Edges 6. PENTAGONAL PYRAMID It has got 6 Faces: The 5 Side Faces are Triangles The Base is a Pentagon It has got 6 vertices It has 10 Edges 7. HEXAGONAL PYRAMID It has got 6 Faces: The 5 Side Faces are Triangles The Base is an Hexagon It has got 7 vertices It has 12 Edges 8. HEPTAGONAL PYRAMID It has got 8 Faces: The 7 Side Faces are Triangles The Base is an Heptagon It has got 8 vertices It has 14 Edges