# classifying angles

- Author:
- Judith Hilinski

## How to use the tools

## Triangle A

**Use the protractor to measure triangle A's angles. What did you observe? **

**Use the ruler to measure the three sides of the triangle. What do you observe?**

**How can you classify triangle A? Why? **

**Measure the angles and sides of triangle B. What do you observe? Based on your observations, how would you classify triangle B?**

**Measure the angles and sides of triangle C. What do you observe? Based on your observations, how would you classify triangle C?**

**Measure the angles and sides of triangle D. What do you observe? Based on your observations, how would you classify triangle D?**

**Measure the angles and sides of triangle G. What do you observe? Based on your observations, how would you classify triangle G?**