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work out x

MathsMia  Apr 18, 2017
 #1
avatar+89953 
+1

The figure can be partitioned into 8 triangles

 

So.....the sum of the interior angles  = 8 * 180  =  1440

 

So  

 

x =  1440 -  [97+ 126+320 + 125 + 95 + 120 + 280 +90+ 80]    =  107°

 

***Notice that the 80°  exteririor angle at the bottom means that the interior angle on the other side  = 360 - 80  =  280°

 

 

cool cool cool

CPhill  Apr 18, 2017

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