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nikdorinn [45]
3 years ago
9

I really need this answer to be right if anyone can help it would be great!!!

Mathematics
2 answers:
Helga [31]3 years ago
7 0
Hello!

All of the angles in a triangle add up to 180°. If we add up the angle measures we have now we get 140°. Now to find a we will subtract 140 from 180.

180-140=40

The measure of ∠A is 40°.

I hope this helps!
gulaghasi [49]3 years ago
5 0
50 degrees. 180-(100+40)=50
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