15:04duration 15 minutes 4 seconds
圓的基本性質(一) (配以中文字幕)
1. 複習圓的性質及有關名稱。 2 理解圓上弦和弧的性質。 3 理解圓上角的性質。
17:04duration 17 minutes 4 seconds
Basic properties of circles (1) (English…
Basic properties of circles (1) (English subtitles available)
1. Understand the properties of chords and arcs of a circle. 2. Understand the angle properties of a circle.