中新网4月20日电 综合香港《文汇报》、《明报》报道，讲起中学数学科三角形课题，全等三角形(Congruent Triangle)的几个证明条件(SAS、SSS、ASA、AAS、RHS)相信令很多人印象深刻。3名香港循道中学的男学生以歌唱形式完美演绎，配以动作介绍数学“证明全等三角形 ...

综合香港《文汇报》、《明报》报道，讲起中学数学科三角形课题，全等三角形(Congruent Triangle)的几个证明条件(SAS、SSS、ASA、AAS、RHS)相信令很多人印象深刻。3名香港循道中学的男学生以歌唱形式完美演绎，配以动作介绍数学“证明全等三角形”的4项条件。

Use a ruler, protractor and a pair of compasses to construct a triangle accurately. After the triangle has been constructed, leave the construction lines visible so each stage of the process is shown ...

I watched the now-famous video about maths triangles. It has got a lot of students talking. Some say the video is meaningless and selfish because the three students are being silly by shaking their ...