1.	Find the value of x.
		A.		B.
		C.	12	D.
		Hint
	2.	Find the value of y.
		A.		B.
		C.	18	D.	4.5
		Hint
	3.	The length of one side of an equilateral triangle is 4 centimeters. Find the length of an altitude of the triangle.
		A.	cm	B.	cm
		C.	2 cm	D.	cm
		Hint
	4.	Find the value of z.
		A.		B.
		C.		D.	5
		Hint
	5.	Find the value of x.
		A.		B.
		C.		D.	10
		Hint