Which of the following is true about a triangular prism?

Options

A. It has 2 triangular faces.
B. It has 3 rectangular faces.
C. It has 6 vertices.
D. All of these

Explanation

To determine which statements about a triangular prism are true, we need to analyze the properties of a triangular prism step by step.

### Step-by-Step Solution:

1. **Identify the Faces of the Prism:**
A triangular prism has two triangular bases and three rectangular lateral faces.
- **Triangular Faces:** There are 2 triangular faces (the top and bottom).
- **Rectangular Faces:** There are 3 rectangular faces (the sides connecting the triangular bases).

**Conclusion:** The statement that it has two triangular faces is **true**.

2. **Count the Rectangular Faces:**
As mentioned, the three lateral faces of the prism are rectangles.
- The three rectangles connect the corresponding sides of the two triangular bases.

**Conclusion:** The statement that it has three rectangular faces is **true**.

3. **Count the Vertices:**
A vertex is a corner point where the edges meet.
- For a triangular prism, there are 3 vertices on the top triangular face and 3 vertices on the bottom triangular face, making a total of 6 vertices.

**Conclusion:** The statement that it has six vertices is **true**.

4. **Summarize the Findings:**
Since all the statements provided in the options are true:
- It has two triangular faces.
- It has three rectangular faces.
- It has six vertices.

Therefore, the correct answer is that **all of these statements are true**.

### Final Answer:
The correct option is **4. All of these**.