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Unit: Module 2: Similarity, proof, and trigonometry

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Topic A: Scale drawings

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Topic B: Dilations

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Quiz 1

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Topic C: Lessons 12-14: Similarity intro

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Topic C: Lessons 15-17: Triangle similarity

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Topic C: Lessons 18-20: Similarity applications

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Quiz 2

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Topic D: Applying similarity to right triangles

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Quiz 3

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Topic E: Lessons 25-26: Trigonometry intro

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Topic E: Lesson 27: Sine and cosine of complementary angles and special angles

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Topic E: Lesson 34: Unknown angles

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Quiz 4

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Topic E: Lessons 28-31: Trigonometry applications

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Topic E: Lessons 32-33: Laws of sines and cosines

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Quiz 5

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Unit test

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About this unit

"Just as rigid motions are used to define congruence in Module 1, so dilations are added to define similarity in Module 2. To be able to discuss similarity, students must first have a clear understanding of how dilations behave. This is done in two parts, by studying how dilations yield scale drawings and reasoning why the properties of dilations must be true. Once dilations are clearly established, similarity transformations are defined and length and angle relationships are examined, yielding triangle similarity criteria. An in-depth look at similarity within right triangles follows, and finally the module ends with a study of right triangle trigonometry." Eureka Math/EngageNY (c) 2015 GreatMinds.org