匯總信息

1. {'smallUrl':'//www.wikihow.com/images_en/thumb/2/22/Find-the-Perpendicular-Bisector-of-Two-Points-Step-1-Version-2.jpg/v4-460px-Find-the-Perpendicular-Bisector-of-Two-Points-Step-1-Version-2.jpg','bigUrl':'//www.wikihow.com/images/thumb/2/22/Find-the-Perpendicular-Bisector-of-Two-Points-Step-1-Version-2.jpg/v4-728px-Find-the-Perpendicular-Bisector-of-Two-Points-Step-1-Version-2.jpg','smallWidth':460,'smallHeight':345,'bigWidth':728,'bigHeight':546,'licensing':'<div class='mw-parser-output'></div>'}1找出兩點間線段的中點。 要找出中點，出兩只用把這兩個點的點間的垂坐標代入中點公式：[(x₁+ x₂)/2,( y₁+ y₂)/2]。也就是直平說，只要分別求出這兩個的分線點的X坐標的平均值和Y 坐標的平均值，就能求出這兩個點的何求中點坐標。假設有兩個點，出兩點1 (x₁,點間的垂 y₁)的坐標是(2, 5)，而點2(x₂,直平 y₂)的坐標是(8, 3)。以下是分線求出中點的算式：^{[1] X 研究來源}
   • [(2+8)/2, (5 +3)/2] =
   • (10/2, 8/2) =
   • (5, 4)
   • 點1 (2, 5) 和點2 (8, 3) 的中點坐標為 (5, 4)。
2. {'smallUrl':'//www.wikihow.com/images_en/thumb/9/9d/Find-the-Perpendicular-Bisector-of-Two-Points-Step-2-Version-2.jpg/v4-460px-Find-the-Perpendicular-Bisector-of-Two-Points-Step-2-Version-2.jpg','bigUrl':'//www.wikihow.com/images/thumb/9/9d/Find-the-Perpendicular-Bisector-of-Two-Points-Step-2-Version-2.jpg/v4-728px-Find-the-Perpendicular-Bisector-of-Two-Points-Step-2-Version-2.jpg','smallWidth':460,'smallHeight':345,'bigWidth':728,'bigHeight':546,'licensing':'<div class='mw-parser-output'></div>'}2求出兩點連線的斜率。要求出兩點連線的出兩斜率，只用把這兩點的點間的垂坐標代入斜率公式：(y₂- y₁) / (x₂- x₁)。直線的直平斜率是指直線上兩點縱坐標之差與兩點橫坐標之差的比。以下是分線求出通過點1 (2, 5) 和點2 (8, 3)的直線斜率的算式：^{[2] X 研究來源}
   • (3-5)/(8-2) =
   • -2/6 =
   • -1/3
     • 這條直線的斜率是-1/3。計算斜率時，必須把2/6簡化為 1/3，因為2和6都可以被2整除。
3. {'smallUrl':'//www.wikihow.com/images_en/thumb/d/d9/Find-the-Perpendicular-Bisector-of-Two-Points-Step-3-Version-2.jpg/v4-460px-Find-the-Perpendicular-Bisector-of-Two-Points-Step-3-Version-2.jpg','bigUrl':'//www.wikihow.com/images/thumb/d/d9/Find-the-Perpendicular-Bisector-of-Two-Points-Step-3-Version-2.jpg/v4-728px-Find-the-Perpendicular-Bisector-of-Two-Points-Step-3-Version-2.jpg','smallWidth':460,'smallHeight':345,'bigWidth':728,'bigHeight':546,'licensing':'<div class='mw-parser-output'></div>'}3計算兩點連線斜率的負倒數。求斜率的負倒數，只用寫出斜率的倒數再更改符號就行了。倒數可以通過翻轉X坐標和Y坐標來求出。1/2的倒數是-2/1，也就是-2；而-4的倒數是-1/4。^{[3] X 研究來源}
   • -1/3的負倒數是3，因為1/3的倒數是3/1，然后把負號變成正號。