单词学习：supplementary angles 数学/几何
supplementary angles
/ˌsʌplɪˈmentri ˈæŋɡlz/
补角
Mr. Gu explained that if two angles are supplementary angles, their measures add up to 180 degrees.
顾老师解释说，如果两个角是补角，那么它们的度数之和为180度。
单词卡片
卡片已就绪
