Question

in triangle ABC,AB=AC and side BC is produced to point D,such that angle ABC=150°,then write the measure of angle ABC
​

Answer 1

Answer:

Step-by-step explanation:

150°

Answer 2

Answer

Given: AB=AC, ∠ACD=130

∠ACD+∠ACB=180 (Linear pair)

130+∠ACB=180

∠ACB=50 ∘

Now, In △ABC,

∠ABC=∠ACB=50 (Isosceles triangle property)

Sum of angles = 180

∠ABC+∠ACB+∠BAC=180

50+50+∠BAC=180

∠BAC=80 ∘