1.which is the same as angle AOB
A. 2.what kind of angle is formed by the corner of a square table?
A.right angle. B.acute angle C.obtuse angle. D.right or acute angle
3.what kind of angle is shown by an opened book whose measures is greater than 90°?
A.right angle. B.acute angle C.obtuse angle D.right or acute angle
4.what kind of angle is illustrated when the hands of a clock form 1:20?
A.right angle and above B.acute angle C.obtuse angle. D.none of the obove