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在兩條平行線上加上一條截線
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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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在兩條平行線上加上一條截線 會出現 8 隻角
若 a = 500 e = 500 (同位角,PQ //RS) 相等
若 a =580 求 e e =580 (同位角,PQ //RS)
若 b =1180 求 f f =1180 (同位角,PQ //RS)
若 c =620 求 g g =620 (同位角,PQ //RS)
若 d =1080 求 h h =1080 (同位角,PQ //RS)
由於任何紅色的角 + 任何綠色的角也會 (互補) = 1800
若 c = 550 f = 1250 (同旁內角,PQ //RS) 互補
若 c = 520 f = 1280 (同旁內角,PQ //RS)
若 d =1070 求 e e =730 (同旁內角,PQ //RS)
若 d = 1200 f = 1200 (內錯角,PQ //RS) 相等
若 d =1230 求 f f =1230 (內錯角,PQ //RS)
若 c =560 求 e e =560 (內錯角,PQ //RS)
在兩條平行線上加上一條截線 會出現 8 隻角
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