Is the Oval Office in the White House oval or rectangular in shape?

There are three oval rooms located in the White House: The infamous Oval Office located on The West Wing, the Diplomatic Reception Room which is an entrance on South Grounds, and the Yellow Oval Room, located on the South side on the second floor of the White House. It is near the living quarters of the President and his family. Both the Diplomatic Reception Room and the Yellow Oval Room serve as a greeting room for arriving diplomats. The Yellow Oval Room is used as a reception room, at times, before State Dinners. The Diplomatic Reception Room is not only used as an entrance for the President and his family, but for Diplomats. This parlor is used as a gathering area for guest before an event at the White House. Prior to it becoming a parlor, it was earlier used as a service work area for the White House Staff. It has four entrances, one that leads to the South Lawn. It is not only a gathering place, but a place for foreign Ambassadors to present their credentials.