In the video, a person is seen using a ruler and a pencil to draw lines on a piece of paper. The person is making a series of triangles and marking them with a pencil. The ruler is used to ensure that the lines are straight and precise. The person's hands are visible, and they appear to be working carefully and methodically. The paper is placed on a flat surface, and there are no other objects in the frame. The lighting is bright, and the colors are clear and distinct. The person's movements are smooth and controlled, indicating that they are experienced in this task.