Answer:
81 + x = 180
x = 180 - 81
x = 99
Step-by-step explanation:
99
The sum of supplementary angles is 180°
81
9. is the complement of 81.
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Answer:
81 + x = 180
x = 180 - 81
x = 99
Step-by-step explanation:
Answer:
99
The sum of supplementary angles is 180°
81
9. is the complement of 81.