Question

If two vertices of a triangle are ( 1, 1, 1) ,( -2, 4, 1) and the centroid is the origin then find the third vertex

Answer 1

formula:

A=(x1,y1) , B=(x2,y2) , C=(x3,y3). i will show the formula model and u will work it ok. then, a=(1,-2) , b=(1,4) , c=(1,1)