Question

3. The measure of A and Boran isosceles AABC are equal, LACD is the exterior angle of AABC,
The measures of ACB and ACD are (3x-24) and (7x + 4) respectively. Find the measures of
ACB and ACD, Also, and the measures of LA and AB. (First draw a rough figure.)​

Answer 1

Answer:

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

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as ∠A=∠B

or,2∠A=140

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∠A=∠B=70

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