Posted by Hale on Wednesday, May 1, 2013 at 6:42am.
Square ABCD has M as the midpoint of AB, N as the midpoint of BC, P as the midpoint of CD and Q as the midpoint of MP. If the area of AMNPDQ is 20, what is the area of ABCD?

Math (Geometry)  Reiny, Wednesday, May 1, 2013 at 10:25am
make your sketch and join QN
in MBCP, you will see 4 equal congruent triangles,
label each one as x units
so outline AMNPDQ and you will see it is made up
of 4x
so 4x = 20
x = 5
all of ABCD is 8x
8x = (8(5) = 40 units
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