| 词汇 | alternate angle | 
| 释义 | alternate angle  noun [ C, usually plural ]  mathematics specialized uk/ɒlˌtɜː.nət ˈæŋ.ɡəl/ /ˈɑːltɝː.nət ˌæŋ.ɡəl/  错角,交错角(交错角是两个相等的角之一:平行的两条线被第三条直线所截,这第三条直线的两侧就形成两个相等的交错角,两条平行线的两侧也各形成两个交错角) one of two equal angles on opposite sides of a line that crosses two usually parallel lines (= lines that are always the same distance apart), and on opposite sides of those lines Compare: corresponding angle | 
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