angles of a linear pair are in the ratio 4:5.what is the measure of each angle?
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If two angles forming a linear pair are in the ratio of 4:5, then find the measure of each of the angles. Solution: Let the two angles be 4y and 5y. We know that linear pair of angles are supplementary ⇒ 4y + 5y = 180°. Therefore, the two angles are: 4y = 4 × 20 = 80° and 5y = 5 × 20 = 100°.
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