Straight Line and Pair of Straight Lines 1 Question 31
31. If the vertices of a are rational points, which of the following points of the is/are always rational point(s)
(a) centroid
(b) incentre
(c) circumcentre
(d) orthocentre
(A rational point is a point both of whose coordinates are rational numbers)
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Solution:
- Since, the coordinates of the centroid are
, then the centroid is always a rational point.