Midpoints and congruent segments

Congruent segments: Segments are congruent if they have the same measure.

If M is the midpoint of , then:

If Z is the midpoint, find and

3y-1=6y-4 -1+4=6y-3y 3=3y y=1

Then = 3(1)-1=3-1=2, =2 units.

= 3y-1+6y-4 = 9y-5 = 9(1)-5 = 9-5 = 4, =4 units.

If =20, C is the midpoint of , and D is the midpoint of , find