2049342 increase by three thousand

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

Name these type of angles shown check all that applies

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.