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https://vle.mathswatch.co.uk/images/questions/question17023.png

 
Guest Oct 9, 2018
 #1
avatar+3186 
+2

(b) 55+55=110, 180-110=70 degrees..If you look at the two lines!

 
tertre  Oct 9, 2018
 #2
avatar+89998 
+2

(a)   angle XBC  = 55°  because it is a corresponding angle  to angle AXY

 

(b) Since XB = XC   ....then the angles opposite these sides are equal

So  angle XBC  =  55° =  angle XCB

 

So...angle BXC  =  180  -  m angle XBC  - m angle XCB  =

 

180   - 55   -55   =

 

180 - 110   =

 

70°

 

 

 

cool cool cool

 
CPhill  Oct 9, 2018

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