A regular polygon<span> is equilateral (it has equal sides) and equiangular (it has equal angles). To </span>find the area of a regular polygon<span>, </span>you<span> use an apothem — a segment that joins the </span>polygon's<span> center to the midpoint of any side and that is perpendicular to that side (segment HM in the following figure is an apothem).
Hope this helps tho I cant help with #2 sorry</span>
Answer:



You can group the addends in any combination and it won't change the result.
Answer:
355
Step-by-step explanation: me
Divide 8 by 9
8 / 9 = 0.888
0.88 is greater than 0.60 so it is not between 0.45 - 0.60