If two angles are supplementary, they must __________.

2 answers:

7 0

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

WARRIOR [948]3 years ago

6 0

Supplementary angles add up to 180

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