1.	Which figure shows altitude ?
		A.		B.
		C.		D.
		Hint
	2.	One of the altitudes of is _________.
		A.		B.
		C.		D.
		Hint
	3.	Which segment is a perpendicular bisector in ?
		A.		B.
		C.		D.
		Hint
	4.	In , which segment is not an altitude?
		A.		B.
		C.		D.
		Hint
	5.	In MOP, O MPO, mM = 40 and is an altitude. Find mNPO.
		A.	70	B.	30
		C.	90	D.	20
		Hint