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在兩條平行線上加上一條截線

在兩條平行線上加上一條截線. 會出現 8 隻角. 在 兩條平行線上加上一條截線會出現 8 隻角. 在 兩條平行線上加上一條截線會出現 8 隻角. a = b 對頂角 - 相等. a = b 對頂角 - 相等. a = b 對頂角 - 相等. a = b 同位角 - 相等. a = b 同位角 - 相等. a = b 同位角 - 相等. a = b 同位角 - 相等. 即所有 紅色 的角 - 相等 所有 綠色 的角 也 相等. a + b = 180 0 直線上的鄰角互補.

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在兩條平行線上加上一條截線

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