Find the perimeter of a quadrilateral with vertices at c (? 2, 1), d (2, 4), e (5, 0), and f (1, ? 3). round your answer to the nearest hundredth when necessary. 12 units 16 units 20 units 24 units

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.

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idkit the do u know da way and ligma consumed ninja

step-by-step explanation:

from the sentence, "tomorrow morning, akiko will arrive an hour late" depicts a third person perspective because it doesn't use any pronoun to replace akiko, the subject of the sentence, and it is in singular form since akiko is only one person.