Respuesta :

Parallel lines have the same slope.
Find the slopes of segments DE and AB and show they are equal.

Slope of DE:
(y1/2 - y1/2)/((x1 + x2)/2 - x1/2) = 0/(x2/2) = 0

Slope of AB:
(0 - 0)/(x2 - 0) = 0/x2 = 0

Both segments have slope 0.
Since the slopes are equal, the segments are parallel.

ACCESS MORE