| 词汇 | interior angle | 
| 释义 | interior angle  noun [ C ]  mathematics specialized uk/ɪnˌtɪə.ri.ər ˈæŋ.ɡəl/ us/ɪnˌtɪr.i.ɚ ˈæŋ.ɡəl/  内角 an angle on the inside of a triangle or other polygon | 
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