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31 votes
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Quadrilateral A B C D is reflected across line m to create quadrilateral A' B'C'D'.

Quadrilateral A B C D is reflected across line m to create quadrilateral A' B'C'D-example-1
User Maja Okholm
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2 Answers

13 votes
13 votes

The perimeter of ABCD is 104 units

How to find the perimeter

Perimeter is solved by adding the sides. It is important to know that reflection preserves the dimension of the object. Hence the size remains congruent before and after reflection.

That is to say

AB = A'B'

BC = B"C'

CD = C'D'

DA = D'A'

Perimeter = 22 + 20 + 30 + 32

Perimeter = 104 units

User Omesh
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28 votes
28 votes

\begin{gathered} \text{Perimeter = A+B+C+D} \\ \text{Perimeter = }20+30+32+22 \\ \text{Perimeter= 104} \\ \text{The perimeter is }104 \end{gathered}

User Ecnalyr
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3.1k points