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leoysucaballo leoysucaballo
  • 08-06-2016
  • Mathematics
Answered

If two angles are supplementary, they must __________.


add up to

add up to

be adjacent

be congruent

Verified Answer :

zoeli
zoeli zoeli
  • 08-06-2016

supplementary angles add up to 180

Answer Link
snjones2 snjones2
  • 08-06-2016

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

Answer Link

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