1. Objectives Justify and apply properties of 45°-45°-90° triangles.

3. Example 1A: Finding Side Lengths in a 45°- 45º- 90º Triangle
Find the value of x. Give your answer in simplest radical form.

4. Example 1B: Finding Side Lengths in a 45º- 45º- 90º Triangle
Find the value of x. Give your answer in simplest radical form.

5. Check It Out! Example 1C
Find the value of x. Give your answer in simplest radical form.

6. Check It Out! Example 1D
Find the value of x. Give your answer in simplest radical form.

7. A _____________ triangle is another special right triangle
A _____________ triangle is another special right triangle. You can use an equilateral triangle to find a relationship between its side lengths.

8. Example 2A: Finding Side Lengths in a 30º-60º-90º Triangle
Find the values of x and y. Give your answers in simplest radical form.

9. Example 2B: Finding Side Lengths in a 30º-60º-90º Triangle
Find the values of x and y. Give your answers in simplest radical form.

10. Check It Out! Example 2C
Find the values of x and y. Give your answers in simplest radical form.

11. Check It Out! Example 2D
Find the values of x and y. Give your answers in simplest radical form.

12. Check It Out! Example 2E
Find the values of x and y. Give your answers in simplest radical form.