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Supplementary angle =180 degrees
1/3 of supplementary angle=(1/3*180)=60 degrees
therefore,Actual measure of the angle=60 degrees(as it is equal to 1/3 of its supplement)
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180/3=60 degree 1/3 of its supplement is 60 degree
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I am sorry, I solved it in hurry and yea the answer is 45 I will explain how
Let the angle which is 1/3rd of its supplement be x, so the other angle becomes 3x, now 3x+x=4x. 4x=180 180/4= 45 45×3=135 and 135+45=180
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