Question

qe 1. conditional statement: \if two lines intersect at right angles, then they are perpendicular.\ what is the contrapositive of the statement? if two lines are perpendicular, then they intersect at right angles. if two lines do not intersect at right angles, then they are not perpendicular. two lines intersect at right angles if and only if they are perpendicular. if two lines are not perpendicular, then they do not intersect at right angles. clear all

Explanation:

The contrapositive of a conditional statement "If p, then q" is "If not q, then not p". Here, p is "two lines intersect at right - angles" and q is "they are perpendicular". So the contrapositive is "If two lines are not perpendicular, then they do not intersect at right angles".

Answer:

If two lines are not perpendicular, then they do not intersect at right angles.