1.	is ____.
		A.	an obtuse angle	B.	an angle of depression
		C.	a right angle	D.	an angle of elevation
		Hint
	2.	The angle of depression from the top of one building to the top of a neighboring building is 12°. If the buildings are 50 feet apart, what is the difference between the heights of the buildings? Round your answer to the nearest tenth of a foot.
		A.	48.9 ft	B.	10.4 ft
		C.	235.2 ft	D.	10.6 ft
		Hint
	3.	C is ______________.
		A.	an angle of depression	B.	an angle of elevation
		C.	a right angle	D.	none of the other choices
		Hint
	4.	Raini is standing on a 40-foot cliff overlooking a river. The angle of depression to the near side of the river is 64°, and the angle of depression to the far side is 35°. How wide is the river, to the nearest tenth of a foot?
		A.	13 feet	B.	226.9 feet
		C.	37.6 feet	D.	1.4 feet
		Hint
	5.	ARCHITECTURE The observation deck of the John Hancock Center is 1030 feet above the ground. The Skydeck of the Sears Tower is 1335 feet above the ground. The John Hancock Center is 1.7 miles from the Sears Tower. What is the angle of elevation of someone standing on the observation deck of the John Hancock Center looking up to the Skydeck of the Sears Tower?
		A.	6.5°	B.	1.9°
		C.	37.7°	D.	8.5°
		Hint