1. Bellwork 1)Are the triangles similar? 2)Find x 80° 70° 80° 30° 14 48 x

2. Lesson 7.3 Use Similar Right Triangles

3. Objective Students will use properties of the altitude of a right triangle.

4. Standards 4.0 – Students prove basic theorems involving congruence and similarity. 12.0 – Students find and use measures of sides and of interior and exterior angles if triangles and polygons to classify figures and solve problems

5. Academic Language Altitude of a triangle Geometric mean Similar polygons

6. Height/Altitude Draw 3 different heights for the same right triangle.

8. Practice

9. More Practice

11. Practice Geometric Mean

13. Climbing the Real World

14. Homework p.453 #1, 2, 3, 5, 9, 11, 15, 32