Solved Example

Solved Example

Ex 1:

How many equilateral triangles can you see in the figure below? (Assume side of the smallest triangle is 1 unit)

No. of triangles with side 1 unit	=	16 (10 upward facing + 6 downward facing)
No. of triangles with side 2 units	=	7 (6 upward + 1 downward)
No. of triangles with side 3 units	=	3 (upward)
No. of triangles with side 4 units	=	1 (upward)
Total no. of equilateral triangles	=	16 + 7 + 3 + 1
	=	27

Did you get it right?