Question

If two vertices of a triangle are (6,3) and (-1,7) and centroid (1,5),then what is the third vertex ?

Answer 1

Answer:

X=1

Y=5

A (6,3)

B (-1,7)

C (x3,y3)

X=x1+x2+x3/3

1=6-1+x3/3

3=5+x3

x3= -2

Y=y1+y2+y3/3

5=3+7+y3/3

15=10+y3

y3=5

the third vertex of triangle is C (-2,5)

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