Question

ما
An exterior angle of a
triangle ABC is equal to
120 ABC is an isosceles triangle
Find all the angles in the triangle
A
B
C
120°
​

Answer 1

Answer:

40+40+40

Step-by-step explanation:

A equals 40

B equals40

C equals 40

all together it's 120

Answer 2

Step-by-step explanation:

angle ACB = 180 (degree) - 120 (degree)

= 60

therefore,

angle B = 60

now,

In isosceles triangle ABC,

angle C = angle B = 60

Also,

angle A + angle B + angle C = 180

angle A + 60 + 60 = 180

angle A + 120 = 180

angle A = 180 - 120

= 60

hence,

angke A = angle B = angle C = 60