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14 votes
14 votes
Angles ABC and DEF are complementary angles. If m/ABC = 72°, what is m/DEF?

User AngryInsomniac
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2 Answers

17 votes
17 votes

Answer: 18

Explanation: Complementary angles sum up to 90. (90 - 72 = 18)

User Vaughany
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2.8k points
13 votes
13 votes

Answer:

18 degrees

Explanation:

If <ABC and <DEF are complementary, m<ABC + m<DEF = 90 degrees. So M<DEF = 90 - 72 = 18 degrees.

User Brimstone
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2.5k points