Question

What are the coordinates of the orthocenter of ∆LMN?
The image is of a 2-dimensional graph with an x-axis and a y-axis. Three points L, M and N are marked on it which are at co-ordinates (-2,4), (4,4) and (1,-2) respectively. They are joined to form a triangle LMN.

Answer 1

X-axis=(5,0) Y-axis =(0,5)

Comparing with (n,0) and (0,m)

n=5 and m=5

∴m+n=5+5=10