Question

HELP 8TH GRADE MATH!!
What is the perimeter of trapezoid ABCD?
Round your answer to the nearest tenth.
A. 16.1 units
B. 8.2 units
C. 4.1 units
D. 20.2 units

Answer 1

@douglaswinslowcooper

Answer 2

do you know how to find length of vertical sides?

Answer 3

for slanted sides, use distance formula.

Answer 4

hey katie!

Answer 5

You can automatically eliminate B and C

Answer 6

finding the length for the vertical sides you probably already know so I'll skip that, but for finding the lengths of the slanted sides I'll show you an easier method.

so find the vertical sides that makes up a right triangle then take those two and use pythagorean theorem for it. which is \[a ^{2}+b ^{2}=c ^{2}\]

Answer 7

Find the lengths of AD and BC by finding the coordinate length that each segment spans.
Find the lengths of AB and CD by using the Pythagorean Theorem/Distance Formula.