Lesson no. 6] Lines & Angle {9th class}Exercise 6.1 Question Solutions NCERT[National Council of educational research and training]

Lesson 6. Lines & Angles 

Exercise 6.1

1. In Fig 6.13 ,lines AB and CD intersect at O .If angle AOC+angle BOE=70 °and angle BOD =40° ,find angle BOE and reflex angle COE .