(Ⅰ)如图①,将矩形纸片折叠,使点B落在y轴上的点D处,折痕为线段,求点D坐标;
(Ⅱ)如图②,点E,F分别在边上,将矩形纸片沿线段折叠,使得点B与点重合,求点C的对应点G的坐标;
(Ⅲ)在(Ⅱ)的条件下,若点P是坐标系内任意一点,点Q在y轴上,使以点D,F,P,Q为顶点的四边形是菱形,请直接写出满足条件的点P的坐标.
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2