#### Chapter 10 Congruent Triangles R.D. Sharma Solutions for Class 9th Exercise 10.2

**Exercise 10.2**

1. In Fig. 10.40, it is given that RT = TS, ∠1 = 2∠2 and ∠4 = 2∠3. Prove that Î”RBT ≅Î”SAT.

**Solution**

2. Two lines AB and CD intersect at O such that BC is equal and parallel to AD. Prove that the lines AB and CD bisect at O.

**Solution**

3. BD and CE are bisectors of ∠B and ∠C of an isosceles Î”ABC with AB = AC. Prove that BD

**=**CE.

**Solution**