辨認平行四邊形 | Identify Parallelograms
影片內容：
00:33 – 對邊相等 | opposite sides equal
02:06 – 對角相等 | opposite angles equal
03:15 – 對角線互相平分 | diagonals bisect each other
04:21 – 兩邊相等且平行 | 2 sides equal and parallel
05:35 – 例子 | example
00:33 – 對邊相等 | opposite sides equal
02:06 – 對角相等 | opposite angles equal
03:15 – 對角線互相平分 | diagonals bisect each other
04:21 – 兩邊相等且平行 | 2 sides equal and parallel
05:35 – 例子 | example