We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
 #1
avatar+101870 
+1

We can use this to find the post-image vertexes

 

New Vertex   =  (  Old vertex  - Dilation Center) *Scale Factor +  Dilation Center

 

Because the Dilation Center is (0,0), this simplifies to :

 

New Vertex  =  (Old Vertex ) * Scale Factor

 

 

So  we have

 

A'  =  (-4, -1)*2  =  (-8, -2)

B'  =  (-4, -3)*2  =  (-8, -6)

C'  =  (-1, -3)*2  =  (-2, -6)

 

 

 

cool cool cool

 Dec 21, 2017

13 Online Users