- 能力倾向有用资源
- 能力倾向 - 问题 & 答案
能力倾向 - 解析几何在线测验
以下测验提供了与解析几何相关的选择题 (MCQ)。您需要阅读所有给出的答案,然后点击正确的答案。如果您不确定答案,可以使用显示答案按钮查看答案。您可以使用下一组测验按钮查看测验中的新题组。
答案:D
解释
The point (4,-6) lies in 4th quadrant
答案:B
解释
AB = √ (b-0)2+ (0-a) 2 = √ b2+a2 = √a2+b2
答案:D
解释
AB2= (2-2) 2+ (-3-2) 2= 0+25=25 ⇒ AB =√ 25 =5 unit
答案:D
解释
Here x₁=4, x₂ = 3, Xᴈ = -3, y₁ =4, y₂= -2 and Yᴈ = 16 ∆ = 1/2 [x₁(y₂-Yᴈ) +x₂(Yᴈ-y₁) +Xᴈ (y₁-y₂)] =1/2 [4(-2-16) +3(16-4)-3(4+2)] = 1/2 [(-72+36-18)] = 27 sq. units.
Q 5 - 圆的直径的端点为 A (4,- 1) 和 B(- 2,- 5)。其圆心的坐标是多少?
答案:A
解释
Co-ordinates of the center are [4+ (-2)/2, -1+ (-5)/2], i.e. (1,-3)
Q 6 - ∆abc 的两个顶点为 A (6, 4) 和 B (- 2, 2),其重心为 G (3, 4)。C 的坐标是多少?
答案:C
解释
Let the co- ordinates of C be (a, b). Then, 1/3 (6-2+a) =3 and 1/3 (4+2+b) =4 4+a=9 and 6+b=12 ⇒ a=5, b= 6
答案:A
解释
Let the required ratio be ℏ:1. Then, its co- ordinates are (5ℏ+2/ ℏ+1, 6ℏ-3/ℏ+1) But, it lies on x-axis. So, its ordinate is 0. ∴ 6ℏ-3/ℏ+1 =0 ⇒ 6ℏ-3 =0 ⇒ ℏ=1/2 Required ratio is 1/2:1 i.e., 1:2
答案:B
解释
The equation of the line is (y-y₁)/(x-x₁) = (y₂-y₁)/(x₂-x₁) i.e., (y-1)/(x+1) = -4-1/2+1 ⇒ (y-1)/(x+1) = -5/3 ⇒ 3y-3= -5x-5 ⇒ 5x+3y+2 = 0
答案:A
解释
Since the given lines are parallel, we have 1/ℏ =2/4 ⇒ ℏ = 2
aptitude_coordinate_geometry.htm
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