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Mathematics 13 Online
OpenStudy (anonymous):

What is the perimeter of rectangle ABCD on the coordinate plane? Coordinate plane: http://static.k12.com/calms_media/media/1294500_1295000/1294585/1/da82f53b1c7292785ca847bbaeee133cd2baf00e/150063.jpg

OpenStudy (solomonzelman):

\[P=2(5+9)\]

OpenStudy (anonymous):

Identify the 2 different sides, and find their lengths. So let's take a look at AD and DC. AD's length we can see is 5. DC's length we can see is 9. 2(5) + 2(9) = 28.

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