Q14 of 78 Page 23

In Fig. 2.11, AB = BC and AD = BD = DC.

The number of isosceles triangles in the figure is


ABC is isosceles so are ABD and CBD.

⇒ 3 triangles are isosceles

More from this chapter

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12

If the sum of two angles is equal to an obtuse angle, then which of the following is not possible?

 13

A polygon has prime number of sides. Its number of sides is equal to the sum of the two least consecutive primes. The number of diagonals of the polygon is

 15

in Fig. 2.12,

∠BAC = 90° and AD ⊥ BC.


The number of right triangles in the figure is


 16

In Fig. 2.13, PQ ⊥ RQ, PQ = 5 cm and QR = 5 cm. Then ∆ PQR is