Question

Please help with the geometry question below

Answer 1

midopint of (x1,y1) and (x2,y2) is $(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

basicaly average the x and y values

so
(0,0) and (20,0)
add 0 and 20 and divide by 2
basically divide 20 by 2

answer is D