Answer:
Definition of Bisect
Step-by-step explanation:
By definition, when two lines bisect each other, they divide each other into two equal segments.
In statement 2, we see that PO and ON are being labelled as congruent, which is referring back to the given information that MQ bisects PN. Since PO and ON are the two segments bisected by MQ, the two must be congruent simply from the definition of bisect.
