1.	The length of a diagonal of a square is 20 centimeters. Find the length of a side of a square.
		A.	cm	B.	cm
		C.	cm	D.	10 cm
		Hint
	2.	The length of one side of a square is 6 inches. What is the length of a diagonal?
		A.	in.	B.	3 in.
		C.		D.	12 in.
		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.	cm	D.	2 cm
		Hint
	4.	Find the value of z.
		A.	5	B.
		C.		D.
		Hint
	5.	Find the value of x.
		A.		B.
		C.	10	D.
		Hint