Which sentence is more grammatically correct? 1) if my teeth are straight, then i did wear my invisalign or 2) if my teeth are straight, then i wore my invisalign.

B. Bisecting a line segment

You forgot to include the construction, so I'll explain how to bisect a line. There are several steps you must follow in order to get this problem solved. First, suppose we have a line segment as shown in the Figure below. If Michelle want to bisect this line segment, she would need to follow these steps:

1. She should choose one end of line segment and place on it.

2. She has to adjust the a bit longer than half the line segment length

4. Next, she must draw two arcs, one of them above and the other below the line.

5. She need to draw arcs from other end of line, but keeping the same compass width.

6. She should draw a line using a ruler where the arcs cross.