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Pearson Geometry Common Core, 2011

PG

Pearson Geometry Common Core, 2011 View details

5. Reasoning in Algebra and Geometry

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Exercise 35 Page 119

The sum of angles ∠ AOB and ∠ BOC is equal to angle ∠ AOC.

m∠ AOC=80

Practice makes perfect

We have been asked to find m∠ AOC. The expression m∠ AOC is the angle measure between the rays OA and OC.

The sum of m∠ AOB and m∠ BOC is equal to m∠ AOC. m∠ AOB+ m∠ BOC= m∠ AOC

m∠ AOB +m∠ BOC = m∠ AOC

m∠ AOB= 60, m∠ BOC= 20

60+ 20=m∠ AOC

Add terms

80=m∠ AOC

Rearrange equation

m∠ AOC= 80

Subchapter links

Lesson Check p.116

Practice and Problem-Solving Exercises p.117-119

Standardized Test Prep p.119

Mixed Review p.119