A conjecture and the flowchart proof used to prove the conjecture are shown. Match the expression or phrase to each box to complete the proof?
This matches a piece of given information.
A point on a line segment is a midpoint if and only if the line segments formed by that point and endpoints of the original line segment are congruent.
This is our other piece of given information, and is necessary for the next step.
4) Transitive property of congruence
5) Definition of isosceles triangle
A triangle is called isosceles if two of its sides are congruent. We have shown this to be the case in the fourth item of the flowchart.