To create a circle, click one point A as the center of the circle. Click another point B located on the perimeter of the circle. A circle forms with center at point A whose radius is the distance from point A to point B.
To create a line, click one point, A. Click another point, B. The points connect with a line.
To create a line segment, click one point, A. Then click another point, B. The points connect with a line segment.
To create a point, click in the graph at a point A.
To create a polygon, click each point for the polygon. Lastly, click on the first point of the polygon so that all the sides connect to form the polygon.
To create a ray, click one point as end point A. Click another point B as a point the ray passes through. The points connect with a ray in the direction of point B.
To create a vector, click one point A as the tail. Click another point B as the head. The points connect as vector AB, in the direction of the point B.