Labeling the Parts of a Circle worksheet - Free Printable

Let's solve the problem of labeling the parts of the circle based on the image and the given terms:

Given Terms:

- center
- radius
- chord
- diameter
- circumference

We need to match each term to the correct part of the circle shown in the diagram.

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Step-by-step Analysis:

1. Center:
- The center is the point equidistant from all points on the circle.
- In the diagram, there is a dot at the middle of the circle, and an arrow points to it.
- So, the label for the center goes with the dot in the middle.

2. Radius:
- A radius is a line segment from the center to any point on the circumference.
- There is a line going from the center to the edge of the circle — this is a radius.
- The arrow pointing to such a line (from center to edge) should be labeled radius.

3. Diameter:
- A diameter is a chord that passes through the center and connects two points on the circumference.
- It is twice the length of the radius.
- In the diagram, one of the longer lines passes through the center and touches both sides of the circle — this is a diameter.
- So, the arrow pointing to this long line through the center should be labeled diameter.

4. Chord:
- A chord is any straight line segment whose endpoints lie on the circle.
- Not all chords pass through the center.
- There is a line that connects two points on the circle but does not go through the center — this is a chord.
- So, the arrow pointing to this non-central line should be labeled chord.

5. Circumference:
- The circumference is the outer boundary or the edge of the circle.
- The curved arrow along the edge of the circle indicates the circumference.
- So, the label circumference goes with the curved arrow around the outer edge.

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Final Labeling:

Now, let’s assign each box based on the arrows:

- Top-left arrow (long line across circle, passing through center) → diameter
- Top-right arrow (line from center to edge) → radius
- Middle arrow (pointing to the dot in the center) → center
- Bottom-left arrow (curved arrow along edge) → circumference
- Bottom-center arrow (line connecting two points on circle, not through center) → chord

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Answer:

Fill in the boxes as follows:

1. Top-left box: diameter
2. Top-right box: radius
3. Middle-right box: center
4. Bottom-left box: circumference
5. Bottom-center box: chord

✔ This correctly labels all parts of the circle.

Let me know if you'd like a visual version!