roshawnandries5471
21.08.2019 •
Mathematics
Ihave 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).
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Ответ:
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;
Ответ: