Question

Q2. In triangle ABC, AB = AC and ext angle ACD = 110º find A.​

Answer 1

Answer:

110+2x=180,. 2x=70, x=35 isocilous triangle

Answer 2

Answer:

A = 40°

Step-by-step explanation:

angle ACD = 110°

angle B = angle C (corresponding angles of isosceles triangle are equal)

angle BCD is 180° (straight angle)

angle ACB + angle ACD = 180°

angle ACB + 110° = 180°

angle ACB = 180° - 110° = 70°

sum of all angles of triangle is 180°

angle A + angle B + angle C = 180°

angle A + 70° + 70° = 180°

angle A = 180° - 140°

angle A = 40°

check the attachment for angles

hope you get your answer