Question

question 7
is the following definition of perpendicular reversible? if yes, write it as a true biconditional.two lines that intersect at right angles are perpendicular.
the statement is not reversible.
yes; two lines intersect at right angles if (and only if) they are perpendicular.
yes; if two lines are perpendicular, then they intersect at right angles.
yes; if two lines intersect at right angles, then they are perpendicular.

Explanation:

A biconditional statement combines a conditional statement and its converse. The statement "Two lines that intersect at right - angles are perpendicular" has a reversible converse. The biconditional form is "two lines intersect at right angles if (and only if) they are perpendicular", which means both the original statement and its converse are true.

Answer:

Yes; two lines intersect at right angles if (and only if) they are perpendicular.