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Definition of supplementary angle noun from the Oxford Advanced Learner's Dictionary

supplementary angle

noun

/sʌplɪˌmentri ˈæŋɡl/

/sʌplɪˌmentri ˈæŋɡl/

(mathematics)

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either of two angles which together make 180° compare complementary angle

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See supplementary angle in the Oxford Advanced American Dictionary

Check pronunciation: supplementary angle

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