1 5 segment angle bisectors
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1.5 Segment & Angle Bisectors

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1.5 Segment & Angle Bisectors. Goals:. Students will understand geometric concepts and applications. Bisect a segment. Bisect an angle. Remember!. Congruent means,… equal to each other!. Midpoint. The point that bisects a segment. Bisects ? splits into 2 equal pieces. 12x+3=10x+5

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Presentation Transcript
goals
Goals:

Students will understand geometric concepts and applications.

  • Bisect a segment.
  • Bisect an angle.
remember
Remember!
  • Congruent means,…
  • equal to each other!
midpoint
Midpoint
  • The point that bisects a segment.
  • Bisects?

splits into 2 equal pieces

12x+3=10x+5

2x=2

x=1

A M B

12x+3 10x+5

segment bisector
Segment Bisector
  • A segment, ray, line, or plane that intersects a segment at its midpoint.

k

A

M

B

midpoint formula
Midpoint Formula
  • Used for finding the coordinates of the midpoint of a segment in a coordinate plane.
  • If the endpoints are (x1,y1) & (x2,y2), then
angle bisector
Angle Bisector
  • A ray that divides an angle into 2 congruent adjacent angles.

BD is an angle bisector of <ABC.

A

D

B

C

last example solve for x
Last example: Solve for x.

* If they are congruent, set them equal to each other, then solve!

x+40o

x+40 = 3x-20

40 = 2x-20

60 = 2x

30 = x

3x-20o

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