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Ex 5.4, 7 Fill in the blanks with acute, obtuse, right or straight : (d) When the sum of the measures of two angles is that of a right angle, then each one of them is ______. Suppose two angles are ∠ A & ∠B Now , Sum of angles = 90° ∠A + ∠B = 90° So , ∠A < 90° & ∠B < 90° ∴ ∠A & ∠B are acute.

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.