Here is the diagram of a circle with labeled parts, including the center, radius, diameter, chord, tangent, and circumference.

Would you like further explanations about these parts or have any specific questions?

Here are 5 related questions to explore:

1. What is the relationship between the radius and diameter of a circle?
2. How do you calculate the circumference of a circle?
3. What is the difference between a chord and a secant?
4. How does a tangent touch a circle?
5. How do you find the area of a circle?

Tip: Always remember that the radius is half the length of the diameter!