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I have a maths final coming up, and I keep getting complementary and supplementary confused. Do any of you have an idea to help me and maybe even other students with this same issue, which is remembering the difference? I mean anything like an acronym, symbols, or easy to remember clues. Any help is appreciated.

 Nov 9, 2018
 #1
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complementary - sum to 90, think (CO)rner

 

supplementary - sum to 180, think (S)traight Line

 Nov 9, 2018

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