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McGraw Hill Integrated II, 2012 View details

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Exercise 32 Page 533

By the definition of a rectangle, we know that EFGH has four right angles.

180

Practice makes perfect

Let's analyze the given quadrilateral so that we can find m ∠ HEF + m ∠ EFG.

By the definition of a rectangle, we know that EFGH has four right angles. Therefore, the measure of both ∠ HEF and ∠ EFG is 90. m ∠ HEF + m ∠ EFG = 90 + 90 ⇕ m ∠ HEF + m ∠ EFG = 180