1.	A staff's shadow is 8 feet and a tree's shadow is 16 feet. If the staff is 9 feet tall, how tall is the tree?
		A.	18 ft	B.	9 ft
		C.	15 ft	D.	12 ft
		Hint
	2.	A lamppost has a shadow that is 2 m long. A street sign has a shadow that is m long. If the street sign is 2 m tall, how tall is the lamppost?
		A.	5 m	B.	3 m
		C.	1 m	D.	m
		Hint
	3.	A staff's shadow is 4 feet long and a tree's shadow is 7 feet long. If the tree is 5 feet tall, how tall is the staff?
		A.	9 feet	B.	2 feet
		C.	3 feet	D.	5 feet
		Hint
	4.	Kim is standing next to a tree. The tree has a shadow that is 3 m long. Kim, who is 1.3 m tall, has a shadow that is 0.8 m long. How tall is the tree?
		A.	3.972 m	B.	4.875 m
		C.	1.846 m	D.	3.5 m
		Hint
	5.	The two triangles shown in the figure are similar. Find the distance d across the river.
		A.	25 meters	B.	16 meters
		C.	18 meters	D.	81 meters
		Hint