Joke Collection Website - Mood Talk - Excuse me, is this painting right? How to draw this? Do you need to draw z axis and y axis?

Excuse me, is this painting right? How to draw this? Do you need to draw z axis and y axis?

1, the distance OX of l is 15mm, and the intersection point d with ab;

2.D is vertical, and a'b' passes through D ';;

3. Connect the cd, c'd' and complete the drawing.

As shown in the figure: