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SEGMENT AND ANGLE QUIZ CONSTRUCTION DAY SEPTEMBER 30, 2014 Objectives: The student will be able to… To demonstrate proficiency with segments and angles. Construct an angle bisector using a compass and a straightedge. Construct a perpendicular bisector using a compass and a straightedge. AGENDA HOMEWORK CHECK WARM UP QUIZ (30 minutes) Construction Lab (Angle Bisector and Perpendicular Bisector) (30 minutes) HOMEWORK 1. “Parallel and Perpendicular Lines” Prerequisite Worksheet **Use your textbook as a resource!** This assignment will prepare you for Friday’s lesson. WARM UP Using the figure to the right… 1. Find the length of 𝐵𝐶. 2. Find the coordinates of the midpoint of 𝐵𝐶. SEGMENT AND ANGLE QUIZ- 30 MINUTES Please clear your desk except for a pencil and calculator. Check your work! Did you use the proper notation? When you are finished, you may start tonight’s homework assignment. No cell phones for music. CONSTRUCTIONS You will need a compass, protractor, and a ruler for today’s lesson. You are responsible for the following constructions: Angle Bisector Perpendicular Bisector CONSTRUCTING AN…ANGLE BISECTOR DEFINITION: An angle bisector is a ray that divides an angle into two congruent angles. Its endpoint is at the angle vertex. Any point on the angle bisector is equidistant from the sides of the angle VIDEO LINK: Angle Bisector Video Link CONSTRUCTING A….PERPENDICULAR BISECTOR DEFINITION: A perpendicular bisector of a segment is a line, segment, or ray that is perpendicular to the segment at its midpoint, thereby bisecting the segment into two congruent segments. If a point is on the bisector of an angle, then the point is equidistant from the sides of the angle. VIDEO LINK: Perpendicular Bisector Video CONSTRUCTING A….MIDPOINT DEFINITION: A midpoint of a segment is a point that divides a segment into two congruent segments. A midpoint, or any line, ray or other segment through a midpoint, is said to bisect the segment. EXIT TICKET Divide the following segment AB into four segments of equal length.