## 1. Which of the following is NOT a solid shape?

### Answer:

### Explanation:

A triangle is a two-dimensional shape, whereas the others are three-dimensional solid shapes.

## 2. How many faces does a cube have?

### Answer:

### Explanation:

A cube has 6 square faces.

## 3. Which solid shape has only one curved surface?

### Answer:

### Explanation:

A sphere is composed of a single curved surface with no edges or vertices.

## 4. The point where three edges of a solid shape meet is called a:

### Answer:

### Explanation:

In solid shapes, a vertex is the point where three or more edges meet.

## 5. How many vertices does a rectangular prism (cuboid) have?

### Answer:

### Explanation:

A rectangular prism or cuboid has 8 vertices.

## 6. Which of the following shapes has no edges or vertices?

### Answer:

### Explanation:

A sphere is a solid shape with a continuous curved surface, without any edges or vertices.

## 7. A pyramid that has a triangular base is known as:

### Answer:

### Explanation:

A tetrahedron is a pyramid with a triangular base and three triangular faces.

## 8. Which shape has one curved face and one flat face?

### Answer:

### Explanation:

A cone has a flat circular base and a curved surface that joins the base to the vertex.

## 9. What shape is the base of a cylinder?

### Answer:

### Explanation:

A cylinder has two parallel circular bases.

## 10. How many edges does a cube have?

### Answer:

### Explanation:

A cube has 12 edges.

## 11. Which solid shape has only one vertex?

### Answer:

### Explanation:

A cone has a single vertex at the pointed end.

## 12. A prism with a pentagon as its base is called:

### Answer:

### Explanation:

A prism named after the shape of its base, so a prism with a pentagonal base is a pentagonal prism.

## 13. Which of the following shapes has only flat surfaces?

### Answer:

### Explanation:

A cube is composed of six flat square faces.

## 14. How many faces does a triangular prism have?

### Answer:

### Explanation:

A triangular prism has 2 triangular bases and 3 rectangular faces, making a total of 5 faces.

## 15. Which of the following is a two-dimensional shape?

### Answer:

### Explanation:

A rectangle is flat and has only length and width, making it a two-dimensional shape.

## 16. The number of vertices in a pyramid is:

### Answer:

### Explanation:

Every pyramid has a base and the additional vertex at the top.

## 17. Which shape has two vertices and one curved surface?

### Answer:

### Explanation:

A cylinder has two vertices (at the centers of the circular bases) and one curved surface.

## 18. A three-dimensional shape can be described by its:

### Answer:

### Explanation:

The amount of space occupied by a 3D shape is called its volume.

## 19. If a solid object is sliced parallel to its base, the shape obtained is called a:

### Answer:

### Explanation:

When a solid is cut by a plane parallel to its base, the exposed section is known as a cross-section.

## 20. Which solid shape has 5 faces, 5 vertices, and 8 edges?

### Answer:

### Explanation:

A square pyramid has 1 square base, 4 triangular faces, 5 vertices, and 8 edges.