Three Dimensional Geometry Question 315
Question: Points ( -2, 4, 7), (3, -6, -8) and (1, -2, -2) are
Options:
A) Collinear
B) Vertices of an equilateral triangle
C) Vertices of an isosceles triangle
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
[a] Here, $ \frac{( 3-( -2 ) )}{1-3}=\frac{-6-4}{-2-(-6)}=\frac{-8-7}{-2-(-8)} $
$ \Rightarrow -\frac{5}{2}=-\frac{5}{2}=-\frac{5}{2} $ . Obviously, points are collinear.
BETA
