____?
Our school library has floors, and the reading room is on the floor.
如图,已知AB、CD相交于点O,OE⊥AB,∠EOC=28°,则∠AOD=____ 度.
在圆内接四边形ABCD中,∠A,∠B,∠C的度数之比为3:5:6,则∠D=____ °.