Page 203 - ICSE Math 6

Square pyramid: If the base of a pyramid is a square, it is called a square pyramid.

Vertex O
F = 5; ABCD, DAO, OCD, OBC and OAB
Face
E = 8; AB, BC, CD, DA, OA, OB, OC and OD
D V = 5; O, A, B, C and D
C
A Edge
B

Triangular pyramid or tetrahedron: If the base of a pyramid is a triangle, it is called a triangular
pyramid.
O Vertex

Edge F = 4; ABC, BOC, AOB and AOC
Face E = 6; AB, BC, AC, OA, OB and OC

A C V = 4; O, A, B and C

B
Prism: A polyhedron whose side faces are parallelograms and bases Maths Info
are congruent parallel polygons is called a prism.

Triangular prism: If the bases of a prism are triangles, it is called a A cuboid is also known as a
triangular prism. square prism.

F Vertex
D Edge F = 5; ABC, DEF, ACFD, BCFE and ABED
E
E = 9; AB, BC, AC, DE, EF, DF, AD, BE and CF
Face V = 6; A, B, C, D, E and F
C

A B

3D Shapes with Curved Face

Sphere: A sphere is a 3D shape with every point on its surface equidistant from its centre.

F = 1
Curved E = 0

surface V = 0

Cone: A cone is a 3D shape which reduces in thickness from a circular base to a point.
Vertex

Curved F = 2
face E = 1
V = 1
Curved
Flat face edge

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