Question

ans .the ques. no. 18.​

Answer 1

Answer:

The correct ans is D) 75°

Step-by-step explanation:

because angle ABD + ABC = 180°

from this angle ABC = 55°

and similarily angle ACB + ACE = 180°

From this angle ACB = 50°

and angle ABC + ACB + BAC = 180°(sum of all angles of a triangle)

From this, Angle A = 180° - 55° - 50°

Angle A = 180° - 105°

Angle A = 75°.