Coordinate Geometry Question 42
Question: The triangle joining the points P(2, 7), Q(4, -1), R(-2, 6) is
[MP PET 1997]
Options:
A) Equilateral triangle
B) Right-angled triangle
C) Isosceles triangle
D) Scalene triangle
Show Answer
Answer:
Correct Answer: B
Solution:
Since $ PQ=\sqrt{68},PR=\sqrt{17},QR=\sqrt{85} $
$ \therefore PQ^{2}+PR^{2}=QR^{2} $ , i.e. right angled triangle.
BETA
