1.5 Segment and Angle Bisectors.ppt - 1.5 Segment Angle Bisectors Geometry Fall 2005 Mrs Spitz Learning Targets \u2022 I can bisect a segment \u2022 I can

# 1.5 Segment and Angle Bisectors.ppt - 1.5 Segment Angle...

• 15

This preview shows page 1 - 15 out of 15 pages.

1.5 Segment & Angle Bisectors Geometry Fall 2005 Mrs. Spitz
Learning Targets I can bisect a segment. I can bisect an angle.
Always Remember! Always Remember! If they are congruent, then set their measures equal to each other!
Midpoint The point that bisects a segment. Bisects ? splits into 2 equal pieces A M B 12x+3 10x+5 12x+3=10x+5 2x=2 x=1
Segment Bisector A segment, ray, line, or plane that intersects a segment at its midpoint. A B M k
Compass & Straightedge Tools used for creating geometric constructions We will do a project with these later.
Midpoint Formula Used for finding the coordinates of the midpoint of a segment in a coordinate plane. If the endpoints are (x 1 ,y 1 ) & (x 2 ,y 2 ), then 2 , 2 2 1 2 1 y y x x
Ex : Find the midpoint of SP if S(-3,-5) & P(5,11). 2 11 5 , 2 5 3 2 6 , 2 2 3 , 1
Ex : The midpoint of AB is M(2,4). One endpoint is A(-1,7). Find the coordinates of B.
• • • 