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In mathematics, a(n) （）angle refers to either of two angles that added together to produce an angle of 90°.

In mathematics, a(n) （）angle refers to either of two angles that added together to produce an angle of 90°.
A.right
B.supplementary
C.adjacent
D.complementary
正确答案：complementary

标签：大学英语词汇解析

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