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15 January, 17:07

How do I know if an angle is supplementary

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Answers (2)
  1. 15 January, 17:11
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    Well. Every angle that add up to 180° is a supplementary angle.

    An angle that adds up to 90° is a complementary angle.
  2. 15 January, 17:22
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    All angles add up to 180 degrees
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