1. Angle Relationships

2. Pairs of Angles Adjacent <s (adj <s) - angles in same plane with common vertex & side but no common interior points Vertical <s (vert <s) – 2 non-adjacent angles formed by 2 intersecting lines Linear Pair (linear pr) – adjacent angles whose non- common sides are opposite rays

3. Angle Relationships Complementary <s (comp) – 2 angles whose sum is 90˚ Supplementary <s (supp) – 2 angles whose sum is 180˚

4. Examples 1. 20 comp ____2. 93 comp ____ 3. 20 supp ____4. 93 supp ____ Find the measures of 2 supp angles if one angle is 6 less than 5 times the other angle:

5. Perpendicular Lines – lines that form right angles W X Y Z

6. Example – What can/cannot be assumed from the picture? m<VYT = 90 <TYW & <TYU are supp <VYW & <TYS are adj <s

7. Examples 30 38 90 E F G A C D B 1.Find measures of <ABG, <DBC, & <EBF: 2.Name an < adjacent to <EBD: 3.Name an < vertical to <DBA: 4.Name the compliment of <FBG: 5.Name the supplement of <ABC: 6.Which < forms a linear pair with <EBF? 7.Which pair of lines are perpendicular? 8.T or F: <DBC & <EBF are vertical <s.