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## #1 2006-02-28 15:30:27

naturewild
Member
Registered: 2005-12-04
Posts: 30

### Similar triangles

This question is really easy but I'm weak in similar triangle.. I dont know how to do it.

In triangle ABC, D and E are in AB and AC respectively such that DE is parallel to BC, AD = 3, DB = 4, and triangle ADE = 81. Determine

1. triangle ABC

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## #2 2006-02-28 15:49:03

mikau
Member
Registered: 2005-08-22
Posts: 1,504

### Re: Similar triangles

triangle ADE = 81 makes no sense. Do you mean ADE = 81 degrees or something?

A logarithm is just a misspelled algorithm.

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## #3 2006-02-28 15:55:46

naturewild
Member
Registered: 2005-12-04
Posts: 30

### Re: Similar triangles

oh those are the areas I mean.

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## #4 2006-02-28 18:03:57

krassi_holmz
Real Member
Registered: 2005-12-02
Posts: 1,905

### Re: Similar triangles

So you can do it all alone.

IPBLE:  Increasing Performance By Lowering Expectations.

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## #5 2006-02-28 18:14:48

naturewild
Member
Registered: 2005-12-04
Posts: 30

### Re: Similar triangles

I tried doing it that way. Let's say x = triangle ABC

ADE / ABC = 3 / 7

81/x = 3/7

x = 189

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## #6 2006-03-01 06:57:42

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,588

### Re: Similar triangles

Did you say that D is along AB and E is along BC?
If so, then DE is parallel to AC, not BC.

igloo myrtilles fourmis

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## #7 2006-03-02 20:45:01

boyhuesd
Member
Registered: 2006-03-02
Posts: 1

o!
It very easy!
ec! ec!

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