the vertex of an angle英语标准发音：the vertex of an angle英式发音：美式发音：翻译中文角的顶点the vertex of an angle - 基本释义[词典1]角顶the vertex of an angle - WEB词典the vertex of an angle角顶 参考资料： 1.百度翻译：the vertex of an angle2.有道词典：the vertex of an angle3.爱词霸：the vertex of an angle
