complementary angle
noun [C usually plural]Definition
› one of two angles that together add up to 90°Describing angles, lines and orientations
(Definition of complementary angle noun from the Cambridge Advanced Learner's Dictionary & Thesaurus
© Cambridge University Press)
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Synonyms and related words:
- (as) straight as a die idiom
- bisector noun
- bolt upright adverb
- circuitous adjective
- corner noun
- corresponding angle noun
- erect adjective
- grade noun (SLOPE)
- gradient noun
- indirect adjective (NOT STRAIGHT)
- projection noun (DRAWING)
- reflex adjective
- scalene triangle noun
- sine noun
- squarely adverb (STRAIGHT)
- straight adjective, adverb (NOT CURVING)
- tangent noun (CIRCLE)
- tangent noun (TRIANGLE)
- transverse adjective
- vertical noun
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