a structure that projects out of a sloping roof typically triangular or polygonal in shape usually constructed with a window or door may have a pitched roof may have a decorative façade may have a gable or hipped roof
dormer which is a structure that projects out of a sloping roof dormer which typically triangular or polygonal in shape dormer which has usually constructed with a window or door dormer which may have a pitched roof dormer which may have a decorative façade dormer which may have a gable or hipped roof