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+0  
 
-1
144
4
avatar+464 

This question is based on Similar Triangles

 

 Oct 17, 2018

Best Answer 

 #4
avatar+464 
+2

Thank you so much Chris, no worries, here is what I got

 

 Oct 17, 2018
 #1
avatar+99582 
+1

DC   = 6

 

So

 

CE + DE  = 6

2DE + DE  = 6

3DE  = 6

DE = 2

 

Since DE is parallel to AB  in triangle FAB..then

 

AB /AF   = DE /DF

6 / [  AD + DF ] = 2 / DF

6 / [ 6 + DF]    = 2 /DF

6DF = 2 [ 6 + DF]

6DF = 12 + 2DF

4DF  = 12

DF = 3

 

So  angle EDF is right and its area = 1/2  * (DE * DF)  = (1/2)(2 * 3)   = 3 units^2

 

 

cool cool cool

 Oct 17, 2018
edited by CPhill  Oct 17, 2018
 #2
avatar+464 
+1

It says 2 is wrong, can you please help me throug with your answer

 Oct 17, 2018
 #3
avatar+99582 
+1

See my corrected answer....sorry!!!

 

 

cool cool cool

CPhill  Oct 17, 2018
 #4
avatar+464 
+2
Best Answer

Thank you so much Chris, no worries, here is what I got

 

shreyas1 Oct 17, 2018

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