1. CONGRUENCE IN RIGHT TRIANGLES Lesson 4-6

2. Right Triangles  Parts of a Right Triangle:  Legs: the two sides adjacent to the right angle  Hypotenuse: the longest side and the side opposite the right angle legs hypotenuse

3. What is the Hypotenuse-Leg (HL) Thm?  If the hypotenuse and a leg of one right triangle are congruent to the hypotenuse and a leg of another right triangle, then the triangles are congruent. Congruent triangles by HL Thm

4. In order to use HL Theorem…  Before your congruence statement, you need to state:  …. Are right angles | defn of perpendicular  …. Are right triangles | defn of right triangles . . … | HL Thm

5. Example

7. Assignment  Page 215  10-12, 17,18, 21-26, 28, 34-37, 40  Page 222  28, 29