In a triangle the first angle is 10 degrees more than the second angle. The third angle is equal to the sum of first 2 angles .
Find the value of all three angles
1 answer:
First angle= x+10
Second angle = x
Third angle = x+x+10 or 2x+10
X+10+x+2x +10=180
4x+20=180
Subtract 20 from both sides
4x=160
Divide both sides by 4
X=40
First angle =50
Second angle=40
Third angle =90
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