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Definition of right triangle noun from the Oxford Advanced Learner's Dictionary

right triangle

noun
 
/ˌraɪt ˈtraɪæŋɡl/
 
/ˌraɪt ˈtraɪæŋɡl/
 (North American English)
(also right-angled triangle especially in British English)
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  1. a flat shape with three straight sides and one right angleTopics Colours and Shapesc2
See right triangle in the Oxford Advanced American Dictionary
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