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alainabbyboo22
Group Title
Calculate the length of AD given AB = 7 cm, AC = 25 cm, and AE = 35.
A. 3.5 cm
B. 5 cm
C. 25 cm
D. 50 cm
 2 years ago
 2 years ago
alainabbyboo22 Group Title
Calculate the length of AD given AB = 7 cm, AC = 25 cm, and AE = 35. A. 3.5 cm B. 5 cm C. 25 cm D. 50 cm
 2 years ago
 2 years ago

This Question is Open

alainabbyboo22 Group TitleBest ResponseYou've already chosen the best response.0
@nubeer
 2 years ago

nubeer Group TitleBest ResponseYou've already chosen the best response.0
ok can't figure out this one.
 2 years ago

JakeV8 Group TitleBest ResponseYou've already chosen the best response.0
The numbers given in the problem and the diagram you posted don't seem to go with the answer choices. I'm also not sure how to solve this one, but something seems mixed up also...
 2 years ago

alainabbyboo22 Group TitleBest ResponseYou've already chosen the best response.0
that's what the choices are for this question /:
 2 years ago

JakeV8 Group TitleBest ResponseYou've already chosen the best response.0
yeah, I'm not doubting you... I just don't know what to do with the situation.
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.2
AC/AD = AE/AB
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.2
So, AD is 5
 2 years ago

JakeV8 Group TitleBest ResponseYou've already chosen the best response.0
how did you know to set up a ratio of the short portion of one leg to the whole length of the other leg?
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.2
There is a good website explaining all this. Look at example 2: http://www.pinkmonkey.com/studyguides/subjects/geometry/chap7/g0707701.asp
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.2
It goes with figure 7.21b which is the figure on the right.
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.2
They use different letters for their points, so you have to rewrite the letters, but its almost the exact same problem.
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.2
It's corresponding sides of similar triangles
 2 years ago

JakeV8 Group TitleBest ResponseYou've already chosen the best response.0
Very nice... I was thinking ratios for similar triangles, but I didn't catch the fact that the "slanted" base and midsections would cause the ratios to be different. Thanks for the link... my goal of "learn something new daily" has been met :)
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.2
This is sort of obscure, but geometry is way underrated. Excellent way to build logic.
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.2
A little bit more about the cyclic quadrilateral:
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.2
In that website that I referenced, they alluded to properties of the cyclic quadrilateral and that might have left some here a little empty like it was magic "balck box" stuff. One really has to come to grips with the cyclic quadrilateral first, so here's another website that explains why I could use that ratio: http://www.onlinemathlearning.com/quadrilateralcircle.html
 2 years ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.2
It's a video (near the bottom) called "Proof for the Cyclic Quadrilateral"
 2 years ago
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