What is the difference between an inventor and an entrepreneur?

Generally both inventors and entrepreneurs are able to come up with new ideas, and share some common characteristics, however, the key difference is that inventors are usually focused on the tangible invention, while entrepreneurs are more focused on the business opportunity.

Explanation:

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.