Question

two vertices of a triangle are (1,2) and (3,5) and its centroid is at the origin. find the coordinates of the third vertex

Answer 1

Let third vertex be (x,y). Centroid=( (1+3+x)/3,(2+5+y)/3) =(0,0). 4+x=0.,x=-4. 7+y=0,y=-7. (x,y)= (-4,-7)

Answer 2

Answer:

The answer is below