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23-02-2017
Mathematics

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What is the correct way to classify a triangle with angles that measure 20° 40 degrees and 120°

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23-02-2017

Add them and if it is 180 degrees in total, than it is a triangle. To do that, you have to add 20°, 40° and 120° and see if it adds up to 180° if its 360°, its a quadrilateral. I hope that helped!

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