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MA.912.G.1.3 Parallel Lines and the Angles Between Them

What You Need To Know...

Identify and use the relationships between special pairs of angles formed by parallel lines and transversals.

  1. The benchmark will be assessed using MC (Multiple Choice) and FR (Fill in Response) items.
  2. Items may have multiple sets of parallel lines.

Example One

In the figure below, AB.jpg is parallel to DC.jpg .


Which of the following statements about the figure must be true?

1-3 Answers.jpg


Example Two

Highlands Park is located between two parallel streets, Walker Street and James Avenue. The park faces Walker Street and is bordered by two brick walls that intersect James Avenue at Point C, as shown below.



What is the measure, in degress, of ∠ACB, the angle formed by the park's two brick walls?

Answer grid.jpg


Additional Examples




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Interior Angles

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Exterior Angles

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Finding Transversal Angles

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More Finding Angles

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Reference Sheet