1. 2-5: Perpendicular Lines

2. Perpendicular lines: 2 lines that intersect to form right angles (90 degree angles)

3. Theorem 2-4: If 2 lines are perpendicular, then they form congruent adjacent angles

4. Theorem 2-5: if two lines form congruent adjacent angles, then the lines are perpendicular

5. Mr. Muir’s Theorem: Perpendicular Lines form Congruent adjacent right angles

6. Theorem 2-6: If the exterior sides of adjacent acute angles are perpendicular, then the angles are complementary

7. Classwork Pg 57: 1-11

8. Homework Pg 58: 2-12 even, 13, 28