The diagonal of a parallelogram creates alternate interior angles.

a). always
b). sometimes
c). never

Segment an is an altitude of right δabc with a right angle at a. if ab = 2, squared 5 in and nc = 1 in, find bn, an, ac.

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?