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Mathematics 18 Online
OpenStudy (anonymous):

HELP I'LL MEDAL!!!!

OpenStudy (anonymous):

OpenStudy (anonymous):

can you please help me?

OpenStudy (anonymous):

I'm thinking B, but I'm not sure

OpenStudy (***[isuru]***):

in the triangle XYZ \[\angle YZX + \angle ZXY + \angle XYZ = 180^{o} \]

OpenStudy (anonymous):

yes I understand that :)

OpenStudy (***[isuru]***):

now u know the values of YZX and ZXY.. so u can find the value of XYZ

OpenStudy (***[isuru]***):

which is 30 degrees

OpenStudy (***[isuru]***):

now in the 2 triangles \[\angle WUV = \angle ZXY\] \[\angle UVW =\angle XYZ\] \[\angle UWV = \angle YZX\] now under any 2 of these pairs the triangles r similar by angle - angle

OpenStudy (***[isuru]***):

which one is it ?

OpenStudy (anonymous):

is it A?

OpenStudy (***[isuru]***):

nope

OpenStudy (***[isuru]***):

C

OpenStudy (anonymous):

it wouldn't be b since we are not given any side measurement so that removes angle-side as a valid reason

OpenStudy (anonymous):

Thank you both @***[ISURU]*** and @insanitycat :) Now I understand :)

OpenStudy (anonymous):

d is wrong since the proof in the answer would respond to angle-side and the reason it states is angle-angle

OpenStudy (anonymous):

choices are narrowed to a and c

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