Behizadeh Behizadeh
  • 02-04-2014
  • Mathematics
Answered

I have been stuck with this one, and i would like to how to solve this.
In each case, determine whether line AB is parallel or perpendicular to CD.
(a) A(0, 0), B(0, 1), C(0, 0), D(1, 0).
(b) A(0, 1), B(2, 3), C(4, 5), D(6, 7).

Answer :

crisforp
crisforp crisforp
  • 03-04-2014
a) AB is parallel CD from graphic;
b) m AB = (3-1)/(2-0) => m AB = 1;  m CD = (7-5)/(6-4) => m CD = 1 => m AB = m CD => AB is parallel CD;
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