Line CF bisect segment ST. All lines bisect a segment at a 90 degree angle, so line CF and segment ST are perpendicular.
Why or why not is this argument valid?
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Can anyone walk me through it here? I don't want a direct answer please.
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If they weren't they would never bisect.
Or collide more like
hmmm was checking the bisect meaning, and it's just to divide in half
but I'd say yes, assuming "ll lines bisect a segment at a 90 degree angle"
So would the answer be "since CF and ST collide they would have to be perpendicular"?
http://www.mathsisfun.com/geometry/bisect.html <--- notice there, is a bisecting line
if you move around the blue line, the red bisector, can bisect without being perpendicular
Meaning when they're perpendicular but right on top of eachother.... so a better answer would be since all lines bisect at 90 degrees and CF bisects ST they would have to be perpendicular correct?
when they're parallel* sorry lol
hmmm well, if we assume " All lines bisect a segment at a 90 degree angle" is true
then CF and ST are obviously perpendicular
but you can bisect another line, that is, cut it two equal sides WITHOUT being perpendicular
so " All lines bisect a segment at a 90 degree angle" is a fishy statement