The Maxwell School
Syracuse University
Syracuse University
The easiest way to figure out the area of the triangle is to take the base to be the length of the vertical line at the left: the difference between the y values of points B and C. That's 800-400=400. The height of the triangle is then the difference between the `x`=20 line and the x coordinate of point A, which is 40. The height is thus 40-20=20. The area is 0.5*400*20=4,000. (Remember: the 0.5*b*h formula requires that there be a right angle between b and h.)