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The value of x + y is: (A picture would be provided below)
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|dw:1378520649639:dw|
The sum of all exterior angles is 360.
|dw:1378520839160:dw|
Those angles are part of a 4 sided shape. (4-2)180 = 360 The sum of the interior of the 4 sided shape is 360, for the triangle it is 180.
Oh yes, I know that part already. So you can do: |dw:1378520968125:dw| Correct so far?
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