1. Welcome Back! September 8, 2015

2. Refresher:  Be courteous of others  Pay Attention  If you miss a day it is YOUR responsibility to make anything up.  Take Good Notes!  Turn in assignments!  Reassessments are STILL available!!!

3. New Unit! Unit 5: Transformations in the Coordinate Plane

4. TermDefinitionExample Angle Circle Perpendicular Line Parallel Line A figure formed by two Rays, called the sides of the angle, sharing a common endpoint <ABC Set of points on a plane at a certain distance, or radius, from a single point, the center Lines that meet/intersect to form right (90 ̊) angles ⊥ Lines in the same plane that never intersect and have the same slope ⃦

5. Line Segment Point Line Ray A line with two endpoints An exact position or location in a given plane A straight path that has no thickness and extends forever A line with a start point, but no end point

6. Distance along a line Right Angle Acute Angle Obtuse Angle The linear distance between two points on a given line Angle that measures 90 ̊ Angle measuring less than 90 ̊ but greater than 0 ̊ Angle measuring greater than 90 ̊ but less than 180 ̊

7. Vertical Angle Linear Pair Complementary Angle Supplementary Angle Adjacent Angle Angles opposite each other when two lines cross; vertical angles are equal A pair of adjacent angles that form a straight line They are supplementary Two angles that add up to 90 ̊; They do not have to be adjacent Two angles that add up to 180 ̊; They do not have to be adjacent Two angles that have a common side and vertex and do not overlap