Three Dimensional Geometry Question 85
Question: Points (?2, 4, 7), (3, ?6, ?8) and (1, ?2, ?2) are
[AI CBSE 1982]
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:
Here, $ \frac{(3-(-2))}{1-3}=\frac{-6-4}{-2-(-6)}=\frac{-8-7}{-2-(-8)} $
Þ $ -\frac{5}{2}=-\frac{5}{2}=-\frac{5}{2} $ . Obviously, points are collinear.
BETA
