# Writing Equations to Solve for Unknown Angles Parallel Lines

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Resource Type
Common Core Standards
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1 MB|37 pages
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1. Proofs and Parallel Lines Digital Unit compatible with Google Slides Lesson 3.1: Exploring Angles formed by Parallel Lines and their Transversals Lesson 3.2: Writing Equations to Solve for Unknown Angles Lesson 3.3: Basic Proofs Lesson 3.4: Prove Theorems about Lines and Angles Lesson 3.5: Prove T
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In this lesson students use geometry knowledge to write algebraic equations to solve for angle measures. This lesson includes an example to get students going followed by six problem solving tasks. The lesson ends with students writing the steps to solve for an unknown angle.

Materials: device with internet, google account
Prerequisite Skills:
Solving Equations
Vertical angles have equal measure.
Linear Pairs are supplementary.
If a transversal intersects parallel lines, then:
-The corresponding angles have equal measure.
-The same side interior angles are supplementary.
-The alternate interior angles have equal measure.
-The alternate exterior angles have equal measure

Students can grade as they go to check their answers as they work.
6 Practice slides follow the lesson that may be used for an assignment
Note: Lesson format is compatible with Google slides®

Total Pages
37 pages
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Teaching Duration
40 minutes
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