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Pearson Geometry Common Core, 2011

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Pearson Geometry Common Core, 2011 View details

5. Reasoning in Algebra and Geometry

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Exercise 40 Page 119

The sum of measures of angles that form a linear pair is 180^(∘).

z=90

Practice makes perfect

We have been asked to find z. We can see that the angle with measure of z^(∘) forms a linear pair with an angle denoted with a square — a right angle.

The sum of measures of those two angles is equal to 180^(∘). Let's write this as an equation and solve for z. z + 90 = 180 ⇕ z = 90

Subchapter links

Lesson Check p.116

Practice and Problem-Solving Exercises p.117-119

Standardized Test Prep p.119

Mixed Review p.119