Question

Angle ACD is an exterior angle of an equilateral Triangle ABC. Find Angle ACD.​

Answer 1

An exterior angle of a triangle is equal to the sum of the opposite interior angles. 

Hence, In this case ∠A and ∠B

So,

∠A+∠B=140∘

as ∠A=∠B

or,2∠A=140∘

∠A=∠B=70∘

Step-by-step explanation:

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Answer 2

Answer:

Hi Jay..thanks for following me..

The answer is 120 degrees.

Because exterior and interior angle sum will make 180 as they are linear pair. Inside angle is 60 so outside will be 180- 60= 120 degree.

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