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sebbie
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Since the angles are in a ratio of 5:6, they have measures of 5n and 6n. Set the sum of the angle measures equal to 360° and solve. 70° + 180° + 5n + 6n = 360° 250° + 11n = 360° Combine like terms 11n = 360° − 250° Subtract 250° from both sides
