+0  
 
0
156
2
avatar+328 

 

 

need help pls geomotry

cerenetie  Feb 19, 2018
 #1
avatar+88898 
+3

16) Since the triangles are similar

 

Angle A = Angle X

Angle B  = Angle Y

Angle C  = Angle Z

 

So...to find Y, we have   (180  - 51  - 37 )  =  92°

 

17)   To find the scale factor from B to C  we have

 

 After Image Dimension of a Side / Pre-Image Dimension of the corresponding Side

 

100 / 120   =  10 / 12   =  5/6

 

 

18)  Similarly    ...  90 / 72   =  10 / 8  =  5 / 4

 

 

cool cool cool

CPhill  Feb 19, 2018
 #2
avatar+7266 
+4

18)

 

90 * the scale factor   =   100

 

the scale factor   =   100 / 90

 

the scale factor   =   10/9

hectictar  Feb 19, 2018

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