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In the coordinate plane, A = (-4,4), B = (0,7), and C = (2,-2). What is the area of triangle ABC?

 Jun 21, 2022
 #1
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See the image here

 

 

Area of ABC  = 

 

[DFEC ] -  [DBA] - [AEC]  - [BFC]  =

 

[6*9 ] -  [ (1/2)(4)(3) ]  - [(1/2) (6) (6) ] - [(1/2) (2) (9) ] = 

 

54  - 6    - 18  -  9   =

 

21

 

 

cool cool cool

 Jun 21, 2022

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