HELP ASAP DUE TONIGHT! (slopes) (brainliest)

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect

In a right triangle δabc, the length of leg ac = 5 ft and the hypotenuse ab = 13 ft. find: b the length of the angle bisector of angle ∠a.

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?