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# Unit 2: Module 2: The concept of congruence

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## About this unit

"In Module 2, students study congruence by experimenting with rotations, reflections, and translations of geometrical figures. Their study of congruence culminates with an introduction to the Pythagorean Theorem in which the teacher guides students through the “square-within-a-square” proof of the theorem. Students practice the theorem in real-world applications and mathematical problems throughout the year." Eureka Math/EngageNY (c) 2015 GreatMinds.org### Learn

### Practice

- Identify transformations Get 3 of 4 questions to level up!
- Translate pointsGet 3 of 4 questions to level up!
- Translate shapesGet 3 of 4 questions to level up!
- Determine translationsGet 3 of 4 questions to level up!
- Rotate points (basic)Get 3 of 4 questions to level up!
- Determine rotations (basic)Get 3 of 4 questions to level up!
- Reflect pointsGet 3 of 4 questions to level up!
- Reflect shapesGet 3 of 4 questions to level up!
- Determine reflectionsGet 3 of 4 questions to level up!

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### Learn

### Practice

- Find measures using rigid transformationsGet 3 of 4 questions to level up!
- Rigid transformations: preserved propertiesGet 3 of 4 questions to level up!
- Mapping shapesGet 3 of 4 questions to level up!
- Congruence & transformationsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

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### Practice

- Angle relationships with parallel linesGet 5 of 7 questions to level up!
- Equation practice with anglesGet 3 of 4 questions to level up!
- Find angles in trianglesGet 5 of 7 questions to level up!
- Find angles in isosceles trianglesGet 3 of 4 questions to level up!
- Finding angle measures between intersecting linesGet 3 of 4 questions to level up!
- Finding angle measures using trianglesGet 5 of 7 questions to level up!

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