+0  
 
+2
53
2
avatar+155 

https://vle.mathswatch.co.uk/images/questions/question15891.png

 

not a) i need help on b)

 

well i know 2x and the 90 deg are the same so it may be parrallel but 

a- im not 100% sure if thats right

b- not sure how to justify if it is or isn't parallel

 Mar 2, 2020
 #1
avatar+29249 
+3

You are correct.  If both are at 90deg to the same line (AB) they are parallel.

 Mar 2, 2020
 #2
avatar+155 
0

ok thank  you

TacoBell  Mar 3, 2020

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