In the diagram what is x + y in terms of z?

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Mathematics WAEC 2006

In the diagram what is x + y in terms of z?

  • 180o - z checkmark
  • 180o + z
  • z - 180o
  • z

The correct answer is: A

Explanation

x + y + z = 180(sum of angles in a \(\bigtriangleup\))

x + y = 180 - z
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