Oval. It is called the Oval Office.
The House Chamber http://www.house.gov/house/Visitor.shtml
It's oval because that way the president can hear everything. There are two points in an oval (or ellipse) called the focus point. In a room such as the oval office, when standing at one of these points you can hear everything that is happening in the room because sound is bounced off the walls/ceiling sending it all to those points (basic geometry). The president's desk is situated on one of those points meaning the president can hear whatever anyone is saying (even when whispering) so you can't "keep a secret" from the president in his office. The mason's designed it. Hope this helps
Very small, typically a one room cabin.
There are four in total. Three rooms, one of each floor in the main part are oval (or more accurately perhaps elliptical) . In addition there is the oval office in the West Wing.
A rotunda. Most atate capitals have a rotunda, but not all. One even has a dome, but no rotunda, because the dome is "false" and is not open to the building interior. A rotunda may also be any round room, such as the oval office of the White House.
The White House's Blue room is blue because it is
Grover Cleveland got married in the Blue Room of the White House.
how did the blue room get its name in the white house in Washington D.C
The blue room is used for entertaining and for special events
The Blue Room
Some rooms in the White House are named after colors because that is the color with which they are decorated.
That would be the Blue Room.
one of the first ladies
The Red Room, The Blue Room, The Green Room, The East Room
The White House contains the Blue Room, the Red Room and the Green Room.