有向角 meaning in English
directed angle
Examples
- Through the use of the multivalued directed angle and its related notions , it is given the sufficient and necessary conditions when the three chordal circles based on the three sides of a triangle as their chords share the same point
摘要利用多值有向角及其相关概念，给出了以三角形每边为弦各作一圆所得三圆共点的充要条件，推广了已有结论。