What is a roof plane?
A roof plane is the flat, pitched surface of the roof. With a gable roof, there are two planes that meet at the top of the ridge. With a hip roof, however, things get slightly more intricate. A gable roof is a roof with a flat-faced end shaped like an “A. This triangular end is called a gable. A hip roof has four sloping sides, without a flat face. Both hip roofs and gable roofs can be incorporated into modern and historical architectural styles.
What is called a plane?
Plane most often refers to: Aero- or airplane, a powered, fixed-wing aircraft. Plane (geometry), a flat, 2-dimensional surface. Plane (mathematics), generalizations of a geometrical plane. The term plane refers to a geometrical plane , or the flat part of the wings. French Aéroplane meaning a shape that moves through the air. Ergo airplane. For a similar reason, the horizontal stabilizer is often called a tailplane .