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Mathematics 21 Online
OpenStudy (anonymous):

write a conditional statement from the sentence "Parallel lines do not intersect"

OpenStudy (zzr0ck3r):

lines are parallel if they do not intersect

OpenStudy (anonymous):

If lines are parallel, then they do not intersect.

OpenStudy (zzr0ck3r):

This is an if and only if statement

OpenStudy (anonymous):

If-then format is still optimal.

OpenStudy (anonymous):

thanks (:

OpenStudy (zzr0ck3r):

lol how is that? a iff b implies ( a implies b) and (b implies a)

OpenStudy (anonymous):

If-then can be used to describe iff statements.

OpenStudy (zzr0ck3r):

no it cant, you have it backwards:)

OpenStudy (zzr0ck3r):

if its a horse it has four legs does NOT imply that if it has four legs it is a horse.

OpenStudy (zzr0ck3r):

ONE if-then can be used to describe ONE direction of an iff statement. TWO if then statements can be used to describe BOTH directions of an iff statement

OpenStudy (anonymous):

You're right. *facepalm*

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