Question

The measure of an angle is 87°. What is the measure of its supplementary angle?

Answer 1

93 degrees

Explanation:

Supplementary angles add up to 180 degrees. Therefore, the equation for finding the supplementary angle to 87 would be:

`87 + x = 180\\x=180-87\\x=93`

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Answer 2

180-87 = 93

Explanation:

supplementary angles add up to 180°

so (the other angle + 87)=180°

other angle =180-87=93°