Cuboids & cubes: nets & sketches
Japanese school year: Elementary 4
What you learn
Explore the properties of cuboids and cubes, focusing on their faces, edges, and vertices. Drawing sketches and nets helps develop spatial visualization skills for three-dimensional shapes. Reviewing the basic properties of rectangles, squares, and right angles beforehand will make learning more effective.
Key points
This rule describes the components of cuboids and cubes. Both rectangular cuboids and cubes consist of 6 faces, 12 edges, and 8 vertices.
This explains how to draw a perspective sketch of a 3D solid. Parallel edges in space are drawn parallel, and hidden edges blocked from view are drawn with dashed lines.
This describes the properties of a folded geometric net. Opposite faces are congruent (identical in shape and size) and parallel, while edges that meet have the same length.
Choose a set to practice.