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exterior angle

noun
🔊/ɪkˌstɪəriər ˈæŋɡl/
🔊/ɪkˌstɪriər ˈæŋɡl/
 (geometry几何)
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  1. an angle formed between the side of a shape and the side next to it, when this side is made longer外角Topics Maths and measurementc2