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14-12-2016
Mathematics

contestada

If two angles are both vertical and supplementary, then the angles are

A.)Obtuse
B.)Right
C.)Acute
D.)Adjacent

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nobillionaireNobley nobillionaireNobley

16-12-2016

Vertical angles are equat.
Supplementary angles add up to 180 degrees.
Let the angles be x and y, then
x = y and x + y = 180
x + x = 180
2x = 180
x = 180/2 = 90

Therefore, the angles are right.

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