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:
answered: Guest
What am i doing here. add?
answered: Guest
it would open into a square depending on the type of envelope iām not sure about the second part
answered: Guest
i saw this question before, dont know the asnwer srry
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