McGraw Hill Integrated II, 2012
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McGraw Hill Integrated II, 2012 View details
4. Rectangles
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Exercise 38 Page 509

Remember that in a rectangle diagonals are congruent.

See solution.

Practice makes perfect
Kyle wants to check if the end zone of a football field is the regulation size, and he wants to be sure that this zone is rectangular by using only a tape measure. To do this, he needs to answer two questions about the end zone. Does it have appropriate side lengths? Is it a rectangle?

To answer the first question, he should measure each side of the end zone and check if they have appropriate measures. Does it have appropriate side lengths? âś“ Is it a rectangle? Even if the end zone has two pairs of congruent sides, it does not mean that it is rectangular. Since we know that in a rectangle diagonals are congruent, he should also check if the diagonals of this figure have the same measure. If they do, then he can be sure that the end zone is a rectangle. Does it have appropriate side lengths? âś“ Is it a rectangle? âś“