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A quadrilateral has three angles that measure 90o , 100o, and 120o. Which is the measure of the fourth angle?
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A quadrilateral has three angles that measure 90o , 100o, and 120o. Which is the measure of the fourth angle?

User Nruth
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360 - (100 + 90 + 120) \\ 360 - 310 = 50
it measures 50


good luck
User Azbuky
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