Choose the triangle in which angle 2 is not an exterior angle. A line extends from a side of the triangle to form angle 2.
A line extends from a side of the triangle to form angle 2.
A line does not extend from a side of a triangle to form angle 2.
A line extends from a side of the triangle to form angle 2.

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Step-by-step explanation:

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step-by-step explanation:

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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