Why must the compass point be placed on points a and b? how would the construction be different if the compass point were placed at random points on the original line?

The compass point must be placed on points A and B because you need to make arcs which would allow you to make the perpendicular line through the given line. The construction would be different if the compass point were placed at random points on the original line because then the line would not be lined up correctly in the middle and it will not be correct, hence why you need to put the compass on A and B.

Step-by-step explanation: This is what I answered on edg

what?

step-by-step explanation:

what do you need with. i love quadrants. can you tell me ?

81 seats

step-by-step explanation:

if you multiply 0.65 times 125 then you get 81.5 seats. well since you can't have half of a seat you have to round down and get 81 seats in the no children zones. that leave 44 seats outside of the no children zone.