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## Answers

**A+B=70^o..................(i)**

**B+C=135^o................(ii)**

*Adding equation (i) and (ii),*

A + B + B + C = 70^o + 135^o

**A + 2 B + C = 205^o.....(iii)**

As we know that sum of all angles of a triangle is 180^o,

Thus,

**A + B + C = 180^o.......(iv)**

*Substracting equation (iii) and (iv),*

A + 2 B + C - A - B - C = 205^o - 180^o

Therefore,

__B = 25^o__*Substituting the value of B in equation (i) & (ii),*

A + B = 70^o

**⇒**A + 25^o = 70^o

**⇒**A = 70^o - 25^o

**⇒**

__A = 45^o__

__B + C = 135^o__

**⇒**25^o + C = 135^o

**⇒**C = 135^o - 25^o

**⇒**

__C = 110^o__

Therefore,

A = 45^o

Therefore,

A = 45^o

**B = 25^o**

__C = 110^o__