Theorem
If a point is on the perpendicular bisector of a segment, then it is equidistant from the endpoints of the segment.
If …
Then …
You will prove Theorem 5-2 in Exercise 32.
Theorem
If a point is equidistant from the endpoints of a segment, then it is on the perpendicular bisector of the segment.
If …
Then …
You will prove Theorem 5-3 in Exercise 33.
Algebra What is the length of
How do you know
The markings in the diagram show that
Now find AB.