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Mathematics 9 Online
OpenStudy (anonymous):

Here are some more, slightly different…

OpenStudy (anonymous):

OpenStudy (mertsj):

I see that DEF is 1/2 the size of ABC so find the perimeter of ABC and divide it by two.

OpenStudy (anonymous):

How do I find the perimeter?

OpenStudy (anonymous):

i don't know how…

OpenStudy (mertsj):

Add the sides.

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