Question

Two lines are parallel if and only if they do not intersect.

Answer 1

Which biconditional is NOT a good definition?


Two lines are parallel if and only if they do not intersect.
A whole number is even if and only if it is divisible by 2.
Two line segments are congruent if and only if they have same length.
Three points are collinear if and only if they lie on the same line.

Answer 2

yes that's correct

Answer 3

thanks for letting everyone know