Question

Find m<1 A. 70° B. 65° C. 50° D. 40°

Answer 1

Question :- Find Angle 1 in diagram

Answer:- Exterior angle is equal to sum of two opposite interior Angle

so :- ATQ

$140 = \angle1 + 90 \\ 140 - 90 = \angle1 \\ 50° = \angle1 \: \: ans$

so your answer is option (C) 50°