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818jasmine
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in a plane, if two lines are perpendicular to the same line, then they are what to each other.
 3 years ago
 3 years ago
818jasmine Group Title
in a plane, if two lines are perpendicular to the same line, then they are what to each other.
 3 years ago
 3 years ago

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mathteacher1729 Group TitleBest ResponseYou've already chosen the best response.0
Have you tried drawing a sketch? 1) Draw a line. 2) Make a second line perpendicular (90 degrees) to the first one. 3) Draw another line perpendicular to the very first line. How are lines 2 and 3 related? (parallel, perpendicular, intersecting at 45 degrees, etc?) Hope this helps.
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
You can also think about slope. if they are mutually perpendicular to a common line of arbitrary slope, how are their slopes related? (perpendicular lines have opposite reciprocal slopes)
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
they are parallel aren't they
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
that's right
 3 years ago

rsvitale Group TitleBest ResponseYou've already chosen the best response.1
if the common line has slope a, the two perpendiculars have slope 1/a. Since their slope is the same they are parallel
 3 years ago

818jasmine Group TitleBest ResponseYou've already chosen the best response.0
what are the exterior angles of a triangle is it 360 degrees
 3 years ago
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