A triangle has corners at (3,2), ( 2, 1),and( 5, -8)#. If the triangle is reflected across the x-axis, what will its new centroid be?

1 Answer
May 25, 2016

New centroid is (103,53)

Explanation:

The centroid of the triangle with corners at (3,2), (2,1) and (5,8) is

(3+2+53,2+1+(8)3) or (103,53)

When triangle is reflected across the x-axis, its centroid too is reflected across the x-axis

and as reflection of a point (x1,y1) in x-axis is (x1,y1),

New centroid is (103,53)