(1)左上图是一副七巧板,它由( )种图形组成的,其中有( )个□,( )个△,( )个□.
(2)( )号图形是正方形.由( )号图形和( )号图形可以拼出这个图形.
(3)请你用④⑤⑥号图形拼成一个长方形,再拼一个三角形,请画出草图.
(4)右上图是贝贝用七巧板拼出的小狗,请你给小狗图案中的每一块标上它在左上图中相应的序号.
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