1.	Find the value of y.
		A.	4.5	B.
		C.	18	D.
		Hint
	2.	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
	3.	Which of the following special right triangles can have a Pythagorean triple as the lengths of its sides?
		A.	both a 45°-45°-90° triangle and a 30°-60°-90° triangle
		B.	a 30°-60°-90° triangle
		C.	neither a 45°-45°-90° triangle nor a 30°-60°-90° triangle
		D.	a 45°-45°-90° triangle
		Hint
	4.	Find the value of z.
		A.		B.	5
		C.		D.
		Hint
	5.	Find the value of x.
		A.	10	B.
		C.		D.
		Hint