A shovel includes a lower travelling body; an upper turning body pivotably attached to the lower traveling body; a camera attached to the upper turning body; a processor; and a memory that includes instructions, which when executed, cause the processor to generate an output image including a camera image captured by the camera; and to display an image representing an extending direction of a work target surface or a direction orthogonal to the extending direction and the camera image while superposing the image on the camera image.