A. Copy and complete the table drawn below. | Number of faces | Number of edges | Number of vertices | |---|---|---| | closed cube | | | | closed cuboid | | | | open cube | | | | open cuboid | | | | closed cylinder | | | | open cylinder | | | | sphere | | | | cone | | | B. Copy and complete the following. 1. A three-dimensional shape having equal faces _____ 2. A cuboid has _____ unequal faces. 3. The face of a cuboid is a _____. 4. A cylinder has _____ flat circular faces. 5. A cone has _____ edge. 6. An open shoe box has _____ faces.
Answer (1)
Let's complete the table and answer the questions regarding the properties of three-dimensional shapes:
A. Copy and complete the table:
Closed Cube
Number of faces: 6
Number of edges: 12
Number of vertices: 8
Closed Cuboid
Number of faces: 6
Number of edges: 12
Number of vertices: 8
Open Cube
Number of faces: 5 (missing one face)
Number of edges: 9
Number of vertices: 8
Open Cuboid
Number of faces: 5
Number of edges: 9
Number of vertices: 8
Closed Cylinder
Number of faces: 3 (2 circular and 1 rectangular curved surface)
Number of edges: 2
Number of vertices: 0
Open Cylinder
Number of faces: 2 (1 circular and 1 rectangular curved surface)
Number of edges: 1
Number of vertices: 0
Sphere
Number of faces: 1 (curved surface)
Number of edges: 0
Number of vertices: 0
Cone
Number of faces: 2 (1 circular flat face and 1 curved surface)
Number of edges: 1
Number of vertices: 1
B. Copy and complete the following:
A three-dimensional shape having equal faces is a cube .
A cuboid has 6 unequal faces.
The face of a cuboid is a rectangle .
A cylinder has 2 flat circular faces.
A cone has 1 edge.
An open shoe box has 5 faces.
These answers classify and describe the properties of common three-dimensional shapes, such as cubes, cuboids, cylinders, spheres, and cones, often explored in middle school geometry.
