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# Unit 1: Get ready for congruence, similarity, and triangle trigonometry

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## About this unit

In this unit, we'll focus on understanding congruence and similarity, and how these concepts can be used to compare shapes. We'll also tackle the Pythagorean theorem and triangle trigonometry, so get ready to sharpen those pencils!

### Practice

- Solving proportionsGet 5 of 7 questions to level up!

### Learn

### Practice

- Explore scale copiesGet 3 of 4 questions to level up!
- Corresponding sides and pointsGet 3 of 4 questions to level up!
- Identify scale copiesGet 3 of 4 questions to level up!
- Identify scale factor in scale drawingsGet 3 of 4 questions to level up!
- Scale copiesGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 480 Mastery points

### Learn

### Practice

- Scale drawingsGet 3 of 4 questions to level up!
- Construct scale drawingsGet 3 of 4 questions to level up!
- Relate scale drawings to areaGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

### Learn

### Practice

- Name anglesGet 3 of 4 questions to level up!
- Identifying supplementary, complementary, and vertical anglesGet 5 of 7 questions to level up!
- Complementary and supplementary angles (visual)Get 3 of 4 questions to level up!
- Finding angle measures between intersecting linesGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 400 Mastery points

### Learn

### Practice

- 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 using trianglesGet 5 of 7 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

### Learn

### Practice

- Approximating square rootsGet 3 of 4 questions to level up!
- Comparing irrational numbersGet 5 of 7 questions to level up!
- Comparing irrational numbers with a calculatorGet 5 of 7 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

### Learn

### Practice

- Use Pythagorean theorem to find right triangle side lengthsGet 5 of 7 questions to level up!
- Use Pythagorean theorem to find isosceles triangle side lengthsGet 5 of 7 questions to level up!

Level up on the above skills and collect up to 160 Mastery points

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Level up on all the skills in this unit and collect up to 2,200 Mastery points!