Either of two angles whose sum is 90°.
- Angle A and angle B are complementary angles.
- It took a full fifteen minutes for him to understand supplementary and complementary angles.
- So what happened to him was that he was struck and flung in a north-easterly direction generally and he came out again at a complementary angle in a south-easterly direction until he was lying on the fog line.
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Line breaks: com|ple|men¦tary angle
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