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Observe the angles in the figure and enter the proper number in the empty place.1. m∠ABC = ___°. 2. m∠PQR = ___°3. m∠ABC + m∠PQR = ___°. |
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Answer» 1. 40 2. 50 3. 90 Note: Here, the sum of the measures of ∠ABC and ∠PQR is 90 °. Therefore, they are complementary angles. |
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