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Mathematics 18 Online
OpenStudy (anonymous):

In the figure, M and N are midpoints of RT and ST. What is the length of MN? a.a + b b.b - a c.2

OpenStudy (anonymous):

I need to see the figure

OpenStudy (anonymous):

OpenStudy (anonymous):

click on the pic

OpenStudy (anonymous):

so can you help @turtlemaroon

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