Question

If JK =

=
60, find JN.
30
11
30
39
25
N
M
L
25
39

Answer 1

JN = 40

Explanation:

A median of a triangle goes from one of the triangle's vertices to the midpoint of the opposite side.

K is at the midpoint of HI , then

JK is a median of the triangle.

The point N is the centroid , the triangle's balance point.

On the median, the distance from the vertex to the centroid is twice as long as the distance from the centroid to the midpoint, that is

JN =
`(2)/(3)` JK =
`(2)/(3)` × 60 = 2 × 20 = 40