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If two angles are supplementary, they must __________. add up to add up to be adjacent be congruent

Craig Stewart

in Mathematics

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Mindee Nelson on June 30, 2018

If two angles are supplementary, their sum is 180º, and can be expressed as x and 180-x. If they are congruent ,then the two angles are equal: x=180-x 2x=180 x=90°, and 180-x=90 ° 2 angles have to add to 180 degrees


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