00:01
For this one.
00:02
What i did was, it says there are many different methods that can be used to find the area of a polygon.
00:09
So for part a, and this is part a, i plotted the points, a, b, c, d, e, and f, and i ended back at the first point.
00:17
So i have a closed polygon.
00:19
So then it wants to know the area of the polygon created by part a and explain how you arrived at your answer.
00:24
So i have a coordinate plane and what i did was i made a square and i found the area of the total square, which was 120.
00:36
And then i subtracted the area of the unshaded parts.
00:41
I used the triangle formula, the rectangle formula.
00:45
So i subtracted the 27 .5, the 6, the 8, the 8 here, the 9 here, the 4 here, and the 4 here.
00:52
And so the area is 53 .5 unit squared.
00:57
Then for the next one, i connected the following points, a, b, c, d, e, and f.
01:04
And then what i did was i connected the closed polygon.
01:09
So here is my closed polygon...