Home / Aptitude Tests / Spatial Reasoning / Find the number of t...

Find the number of triangles in the given figure.

...
Find the number of triangles in the given figure.

Find the number of triangles in the given figure.

A.

15

B.

16

C.

17

D.

18

Correct answer is C

The figure may be labelled as shown.

The simplest triangles are ABF, BFG, BCG, CGH, GHD, GED, EFG and AFE i.e. 8 in number.

The triangles composed of two components each are ABG, BGE, AGE, ABE and GCD i.e. 5 in number.

The triangles composed of three components each are BCD, CDE, BED and BCE i.e. 4 in number.

Thus, there are 8 + 5 + 4 = 17 triangles in the figure.