A triangular prism has_________as its base.

Options

A. triangle
B. Square
C. circle
D. pentagon

Answer

To solve the question "A triangular prism has_________as its base," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of a Triangular Prism**:
A triangular prism is a three-dimensional shape that has two triangular bases and three rectangular faces connecting the corresponding sides of the triangles.

2. **Identify the Shape of the Base**:
Since the prism is defined as a triangular prism, we need to identify what shape the base is. The term "triangular" indicates that the base is a triangle.

3. **Draw a Diagram**:
To visualize the triangular prism, we can draw a rough diagram. Start by drawing a triangle for the top face and then draw another triangle of the same size directly below it. Connect the corresponding vertices of the two triangles with straight lines to form the rectangular sides.

4. **Count the Faces, Edges, and Vertices**:
Although not directly asked, knowing the properties of the prism can help confirm our understanding. A triangular prism has:
- 5 faces (2 triangular and 3 rectangular)
- 9 edges
- 6 vertices

5. **Conclude the Answer**:
Based on the definition and the properties of the triangular prism, we conclude that the base of a triangular prism is a triangle.

### Final Answer:
A triangular prism has **a triangle** as its base.

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