Question 1207004
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66 = first angle
x = second angle
0.5x+57 = third angle


For any triangle, the inside angles <u>always</u> add to 180 degrees.


first+second+third = 180
66+(x)+(0.5x+57) = 180
1.5x+123 = 180


I'll let the student take over from here.
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