Make a timeline that explains how the solar system was modeled. The following points should be included.
1. Names of all the scientists and astronomers involved.
2. Describe what each scientist proposed and whether his theory was accepted or no with justification.
3. All dates and years

if he does not use open the compass the a width greater than half of po, he will not be able to find the midpoint of the line, without the midpoint of the line, he will not be able to bisect the line.   to find the midpoint of a line the circles drawn with a compass must either intersect or be touching.