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Standard: G.CO.A.9
“I can identify and apply angle relationships formed by parallel lines and a transversal.”

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This is where you will get a formal introduction to the lessons.

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Angles formed by parallel lines and transversals | Geometry | Khan Academy

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Video #2

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Please use this chart to take notes.

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Here is an article to read to help you excel.

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Parallel & perpendicular lines | Basic geometry (video) | Khan Academy

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Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

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These are your practice problems! Please complete all practice questions.

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IXL is the world's most popular subscription-based learning site for K-12. Used by over 15 million students, IXL provides personalized learning in more than 10,000 topics, covering math, language arts, science, social studies, and Spanish. Interactive questions, awards, and certificates keep kids motivated as they master skills.

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If two parallel lines are cut by a transversal, what do you know about the alternate interior angles? Give an example.

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Today, we will learn how angles relate when a transversal cuts parallel lines.

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A transversal cuts two parallel lines. If one angle measures 3x + 15 and its corresponding angle measures 75°, solve for x.”

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Explain in your own words how knowing angle relationships can help solve geometry problems.

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Success Criteria:

I can name angle pairs (vertical, alternate interior, corresponding, etc.).

I can explain why they are congruent or supplementary.

I can solve problems using angle relationships.

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Please use this tool to practice problems with real time feedback.