Question

8. Obtain the coordinates of the centroid of the triangle
whose vertices are:
(i) (-2,5), (4, -1) and (5, 4),
(ii) (-2, 3). (2, -1) and (4,0),
(iii) (3,-5), (-7, 4) and (10.-2),
(iv) (-2, 1), (4, -3) and (6,4),
Also find the lengths of the medians.
ors of
9. The centroid of a triangle whose two vertices are (2, 4)
and (3,-4) is found to be (3, 1). Find the third vertex.
10. A is two-thirds the way from (1, 10) to (-8,4) and B is the
mid-point of (0, -7), (6,-11). Find the distanccl AB .S
in of
:-2, 11. Show that the four points (0.-1),(4,-3), (8,5) and (4,7)
are thc angular points of a rectangle.
12. Find the coordinates of the incentre of the triangle whose
angular points are respectively:
.ES​

Answer 1

.........centroid of triangle=(sum of x-coor of vertex/3,sum of

y- coord /3)