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lesson 9
1 hour

Unknown Angles Proofs-Writing Proofs


Description

In Lesson 9, students make the transition from unknown angle problems to unknown angle proofs. Instead of solving for a numeric answer, students need to justify a particular relationship. Students are prepared for this as they have been writing a reason for each step of their numeric answers in the last three lessons.

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Credits

From EngageNY.org of the New York State Education Department. Geometry Module 1, Topic B, Lesson 9. Available from engageny.org/resource/geometry-module-1-topic-b-lesson-9; accessed 2015-05-29.
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