Question
Question: The orthocenter, circumcentre, centroid and incentre of the triangle formed by lines x + y = a with ...
The orthocenter, circumcentre, centroid and incentre of the triangle formed by lines x + y = a with the coordinate axes lie on :
A
x2 + y2 = 1
B
y = x
C
y = 2x
D
None of these
Answer
y = x
Explanation
Solution
Q D OAB is isosceles with OA = OB orthocentre, centroid, incentre, circumcentre lies on y = x