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16-06-2017
Mathematics

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What is the measure of angle A in the triangle?

What is the measure of angle A in the triangle class=

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tiffanixdddd tiffanixdddd

16-06-2017

180 = 2x-10+x+30+70
180 = 3x+90
90 = 3x
x = 30

2(30)-10 =50

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