Question

the exterior angle at C of angle abc is equal to 120 find the measure of all the angles of the triangle if angle A is equal to Angle B what type of triangle is this​

Answer 1

Step-by-step explanation:

We have,

triangle ABC

A = B ,

Exterior angle at C is equal to 120

therefore,

angle C + 120 = 180 ......[ exterior angle property]

C = 180-120

C = 60 degree

Now,

Consider the triangle ABC

Let angle A = angle B = X (suppose)

angle A + angle B + angle C = 180

.....[ Sum of all angles of a triangle]

X + X + 60 = 180

2x = 180-60

2x = 120

x = 120/2

x = 60 degree

hence,

angle A = angle B = angle C = 60 degree

Therefore, this is an equilateral triangle whose all angles are equal.

THANKS!!!!!!

Answer 2

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Answer♡

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your answer is 60°

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