+0  
 
-1
124
2
avatar+464 

once again , please help

 

 Oct 17, 2018
 #1
avatar+98090 
+1

angle AEB  = angle DEC

angle B  = angle C

Therefore, by AA congruency, triangle AEB  similar to triangle DEC

 

Since EC  = 4  and  BE   = 5...the scale factor of triangle DEC  is 4/5 that of triangle AEB

 

So.... [ CED  ] =  [scale factor of DEC to AEB ]^2  * area of AEB

 

[CED ]   =     [ 4/5]^2 * 50  =  [16/25] * 50  =  32 units^2  

 

 

cool cool cool

 Oct 17, 2018
 #2
avatar+464 
+1

Thank you Chris

 Oct 17, 2018

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