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Can someone help me with Geo Problem!
Diagonal AC divides a trapezoid ABCD two similar triangles ABC and ACD. Find AC if BC=4cm and AD=9cm
 one year ago
 one year ago
Can someone help me with Geo Problem! Diagonal AC divides a trapezoid ABCD two similar triangles ABC and ACD. Find AC if BC=4cm and AD=9cm
 one year ago
 one year ago

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vmathhelpBest ResponseYou've already chosen the best response.0
@ganeshie8 I need help
 one year ago

vmathhelpBest ResponseYou've already chosen the best response.0
@ghazi @lalaly @AccessDenied
 one year ago

kajolc.2496Best ResponseYou've already chosen the best response.0
Are these triangles similar by area?
 one year ago

kajolc.2496Best ResponseYou've already chosen the best response.0
Is not there any fig. for this?
 one year ago

campbell_stBest ResponseYou've already chosen the best response.0
I think it looks like thisdw:1356206771435:dw the angles marked x are equal by alternate angles in parallel lines
 one year ago

ghaziBest ResponseYou've already chosen the best response.1
have you provided whole information?
 one year ago

kajolc.2496Best ResponseYou've already chosen the best response.0
I think there is something we r missing..
 one year ago

campbell_stBest ResponseYou've already chosen the best response.0
well the corresponding sides in the triangles are triangle ABC and triangle ACD are AB AC AB DC BC AD now you need to use the ratio's of corresponding sides in similar triangles
 one year ago

kajolc.2496Best ResponseYou've already chosen the best response.0
but ques. does'nt say that it divides the triangles in equal areas!
 one year ago

kajolc.2496Best ResponseYou've already chosen the best response.0
that's wat i was confirming earlier
 one year ago

kajolc.2496Best ResponseYou've already chosen the best response.0
SIMILARITY CAN ONLY BE USED WHEN AREAS ARE EQUAL
 one year ago

campbell_stBest ResponseYou've already chosen the best response.0
oops corresponding side should be AC and DC so using the ratio of corresponding sides \[\frac{4}{9} = \frac{AB}{AC}= \frac{AC}{ DC}\]
 one year ago

campbell_stBest ResponseYou've already chosen the best response.0
who knows.... it doesn't make sense to me... there seems to be something missing from the question.
 one year ago

campbell_stBest ResponseYou've already chosen the best response.0
Oh, and triangles can be similar and have different areas the ratio will be the linear ratio squared. so the ratio of areas in the triangles is ABC:ACD = (4/9)^2
 one year ago

vmathhelpBest ResponseYou've already chosen the best response.0
@ghazi is there missing info?
 one year ago

vmathhelpBest ResponseYou've already chosen the best response.0
wat r u confused about?
 one year ago

ghaziBest ResponseYou've already chosen the best response.1
there is something missing in it
 one year ago
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