Since I cannot view images or receive images directly, I'm unable to directly observe the object you're referring to. Therefore, I'll provide answers based on the assumption that I cannot see the images:

1. **Does the object have the shape of a regular octagon?**
   - **Answer:** Unclear
   - **Reasoning:** Without visual access to the images of the object, I cannot confirm whether the object has the shape of a regular octagon.

2. **Is the object extruded in one dimension?**
   - **Answer: ** Unclear
   - **Reasoning:** Without seeing the object from the provided images, I cannot determine if the object is extruded in one dimension or has a different form.