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18-01-2018
Mathematics

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if two angles are both vertical and supplementary then the angles are

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mathmate mathmate

18-01-2018

If the angles are vertical, they must be equal.
If the angles are supplementary, then they add up to 180 degrees.

If each angles is x (since they are equal)
then
2x=180, or
x=90 °

The angles are each 90 °

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