i used to know how to do this in 7th but i forget easily
step-by-step explanation:
Answer from: Quest
according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.
step-by-step explanation:
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Mathematics, 20.06.2019 18:04
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