Vertical angles are formed when two lines intersect and the opposite sides of the angles are the same measurement. Thus, <BOD and <COA have the same measure being opposite/vertical to each other.
Divid to get the other side :) so if the doll house is 1/12 of the queen size bed you divid each side by 12 see. 4800/80=60. 80/12=6.6667.... so 60/12=5. so then 5x6 1/3. hope this helps you ... goood luck! :)
