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Sunshine447
 2 years ago
Best ResponseYou've already chosen the best response.0Which statement must be true to prove that segment DE is parallel to segment CA?

Sunshine447
 2 years ago
Best ResponseYou've already chosen the best response.04 : EA = 1 : DC 2 : DC = 5 : EA 3 : EA = 2 : DC 1 : DC = 2 : EA

Sunshine447
 2 years ago
Best ResponseYou've already chosen the best response.0@phi hopefully this will be the last question I need help with...

phi
 2 years ago
Best ResponseYou've already chosen the best response.0if DE is  to CA then the sides of the triangle are transversals dw:1359074409155:dw if the lines are parallel then the marked angles are equal "corresponding angles" of a transversal if the angles are all the same, the top little triangle is similar to the big triangle. that means you want the sides to be in proportion

Sunshine447
 2 years ago
Best ResponseYou've already chosen the best response.0okay,but how do we make the sides proportionate?

phi
 2 years ago
Best ResponseYou've already chosen the best response.0for example you can say the legs of the little triangle on top are in the ratio of 16/24 or simply 2/3 the legs of the big triangle are in the same ratio BC/BA but that isn't in any of the choices also, the segments, DC/EA are in proportion \[ \frac{2}{3} = \frac{DC}{EA} \] that looks promising but it's not in the same form as your choices we can reorder things, by first cross multiplying 2*EA = 3*DC now divide by EA : 2= DC * 3/EA divide by DC 2/DC = 3/EA

phi
 2 years ago
Best ResponseYou've already chosen the best response.0you can write 2/DC = 3/EA this way 2: DC = 3:EA or 3 : EA = 2 :DC

Sunshine447
 2 years ago
Best ResponseYou've already chosen the best response.0Oh my gosh @phi , I have no clue how, but you make it possible for me to understand math! Thanks sooooo much for ALL the help you've given me! :)
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