(1)当△BEF旋转到如图2所示位置,且AB=BC时,猜想GH与CE之间的关系,并证明你的猜想.
(2)已知AB=6,BC=8,
①当△BEF旋转到如图3所示位置时,猜想GH与CE之间的数量关系,并说明理由.
②射线GH,CE相交于点Q,连接BQ,在△BEF旋转过程中,BQ有最小值,请直接写出BQ的最小值.
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