Question

how to find vertex can it be repeated like angle ACD and angle DCA​

Answer 1

When there is an angle named < ABC it can also be written as < B or < CBA .

All three are right....when using three letters the representing angle letter should be in middle...and other two letters order can be changed...

hope it helps !!

Answer 2

Answer:

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

∘

as ∠A=∠B

or,2∠A=140

∘

∠A=∠B=70

∘

Step-by-step explanation:

i hope this answer can help you

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