I can find the perimeter and area of polygons in the coordinate plane.
Find the area and perimeter of trapezoid ABCD if the vertices are A(-2,5) B(8,5) C(-4,-1) and D (4,8)
Find the area and perimeter of a triangle whose vertices are A(-3,5) B(3,2) and C(1,-2)
THIS PROBLEM HAD INCORRECT POINTS
Use the points that are listed above!!
To find the area of the trapezoid you need to know the lengths
of the bases and the height of the trapezoid. You will need to
create the height line. You will do this by finding the slope of
side BC. Then start at point A and draw a perpendicular line
(use a perpendicular slope) until it reaches side BC.
Now plug in all of the information into the area formula
Area: 45.2 units ^2
To find the perimeter you need to find the lengths of all
four sides, then add them together.
Perimeter: 31.4 units
1 answer