Page 14 - Maths Skill - 6
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12 Maths
Example 3: Represent the following triangular or square numbers geometrically.
(a) 4 (b) 6 (c) 10 (d) 16 (e) 21 (f) 36
Solution: (a) Since 4 = 2 × 2 hence, it is a square number. It can be represented as 2
4 2
(b) Since 6 is a triangular number, hence it is represented as
(c) 10 is a triangular number, so it is represented as
(d) 16 = 4 × 4 can be represented as
(e) 21 is a triangular number, hence can be represented as
(f) 36 = 6 × 6 it is a square number. It appears in triangular numbers as well
(1, 3, 6, 10, 15, 21, 28, 36, .......................). So it can be represented in both the ways.
36 as a square number 36 as a triangular number
