What kind of angle is shown by an opened book whose measure is greater than 90°?
A.acute angle
B.obtuse angle
C.right angle
D.straigth angle
![What Kind Of Angle Is Shown By An Opened Book Whose Measure Is Greater Than 90Aacute AngleBobtuse AngleCright AngleDstraigth Angle class=](https://ph-static.z-dn.net/files/d34/5ee3c9c9382cf4f689165f3109b4e21a.jpg)