Question 16

How many triangles are there in the figure given below ?

Solution

Shortcut formula for counting the number of triangles is $$\frac{n * m * (n + 1)}{2}$$ where

n = number of vertical parts

m = number of horizontal parts

$$\frac{4 * 3 * (4 + 1)}{2}$$ = 30

So , the answer would be option d)30 .

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