## Rectangle Diagrams.docx - Section 2: Proving that These Triangles are 30, 60, 90 Triangles

30, 60, 90 Triangles

# 30, 60, 90 Triangles

Unit 9: Similar and Right Triangles

Lesson 6 of 8

Lesson 6 of 8

## Objective: Students will be able to become familiar with the ratios of the sides of 30, 60, 90 triangles.

Subject(s):

Math, similar triangles, Geometry, Similarity and Congruence, triangle (Determining Measurements), right triangle, Pythagorean Theorem, special right triangles, proof, 10th grade

*45 minutes*

3

#### Applying the Pattern

*10 min*

I ask that the students turn to the back of the Rectangle Diagrams handout. These problems and the accompanying questions help to pull together and summarize the topic of the 30-60-90 Right Triangle.

*expand content*

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- LESSON 1: Introduction to Similar Right Triangles
- LESSON 2: Prove It (Part 1)
- LESSON 3: Prove It (Part 2)
- LESSON 4: Using the Pythagorean Theorem
- LESSON 5: Special Right Triangles
- LESSON 6: 30, 60, 90 Triangles
- LESSON 7: Isosceles Right Triangles
- LESSON 8: Special Right Triangles Puzzle Activity

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