Understanding 3D Shapes

The video tutorial by Kak Citra introduces the concept of 3D shapes, known as 'bangun ruang', and their significance in daily life. It covers the elements of 3D shapes, such as sides, edges, and vertices, and provides detailed characteristics of various shapes including cubes, cuboids, triangular prisms, square pyramids, cylinders, cones, and spheres. Each shape's unique features, such as the number of sides, edges, and vertices, are explained. The video concludes with a summary and encourages viewers to engage with the content by subscribing and sharing.

Which of the following is NOT an example of a 3D shape found in everyday life?

• Flat paper

• Milk can

• Farmer's hat

• Tent

What is the term for the line where two faces of a 3D shape meet?

• Vertex

• Edge

• Angle

• Face

How many faces does a cube have?

• 12

• 6

• 8

• 4

A cuboid has the same number of edges as a cube. How many edges are there?

• 8

• 12

• 10

• 14

How many vertices does a triangular prism have?

• 4

• 5

• 8

• 6

What is the shape of the base of a square pyramid?

• Triangle

• Square

• Rectangle

• Circle

How many curved edges does a cylinder have?

• 3

• 1

• 2

• 4

Which 3D shape has only one vertex?

• Cylinder

• Cone

• Sphere

• Cube

What is the total number of faces on a cone?

• 3

• 2

• 4

• 1

Which 3D shape has no edges or vertices?

• Sphere

• Cylinder

• Cube

• Cone