1. If the topic requires a dotted line to represent a certain situation or object, you can answer it directly with a dotted line. For example, if you draw a square and mark its sides with dotted lines, you should draw four sides of the square with dotted lines when you answer.

2. If the topic requires a solid line to represent a certain situation or object, you can answer it directly with a solid line. For example, if you draw a triangle and mark its sides with solid lines, you should draw three sides of the triangle with solid lines when you answer.