Find the number of triangles in the given figure. 23 27 29 31 The figure may be

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Correct Answer

29

Explanation

The figure may be labelled as shown.

Find the number of triangles in the given figure. 23 27 29 31 The figure may be labelled as shown. T

The simplest triangles are AHL, LHG, GHM, HMB, GMF, BMF, BIF, CIF, FNC, CNJ, FNE, NEJ, EKJ and JKD i.e. 14 in number.

The triangles composed of two components each are AGH, BHG, HBF, BFG, HFG, BCF, CJF, CJE, JEF, CFE and JED i.e. 11 in number.

The triangles composed of four components each are ABG, CBG, BCE and CED i.e. 4 in number.

Total number of triangles in the given figure = 14 + 11 + 4 = 29.