Mathematics
Mathematics, 04.02.2020 15:49, johnb8223

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

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Is the following definition of perpendicular reversible? if yes, write it as a true biconditional.<...

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