Q1) How did we prove today that the given quadrilateral was a parallelogram?
a) We used the slope formula to show opposite sides were parallel
b) We used the distance formula to show opposite sides were congruent
c) We used the midpoint formula to show the diagonals bisected each other

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+

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step-by-step explanation:

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step-by-step explanation:

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