BE is the midsegment of ΔACD. The value of x is:
5.
20.
35.
40.

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

i would you but i don't under stand the qustion

step-by-step explanation:

you need to rotate this triangle about the origin 270 degrees clockwise to create the full square.