What is a circle?
A circle is a geometric shape. It is primarily defined by a center point, and a circumference around that point at a fixed radius. What differs a circle from other shapes is that it does not have any edges.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What is a circle?
### Input: 
### Response: A circle is a geometric shape. It is primarily defined by a center point, and a circumference around that point at a fixed radius. What differs a circle from other shapes is that it does not have any edges.