Each of the four angels of a quadrilateral 90°. How many rectangles can you construct using this condition? 0 1 2 4, or infinitely many.

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

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the answer is su.k.my? ? co.kc