Interactive math worksheet for students to label the parts of a circle.

Let’s go step by step to label each part of the circle correctly.

We have 7 blank boxes pointing to different parts of the circle, and 7 words to choose from:
- radius
- arc
- center
- chord
- sector
- segment
- diameter

Let’s look at each arrow one by one:

1. Arrow pointing to the red dot in the middle → That’s the center of the circle.

2. Arrow pointing to a line that goes all the way across the circle through the center → That’s the diameter.

3. Arrow pointing to a line from the center to the edge → That’s the radius.

4. Arrow pointing to a straight line connecting two points on the circle (but not through the center) → That’s a chord.

5. Arrow pointing to the curved red line at the bottom → That’s an arc (a piece of the circle’s edge).

6. Arrow pointing to the area between the chord and the arc (the “slice” cut off by the chord) → That’s a segment.

7. Arrow pointing to the pie-shaped region bounded by two radii and an arc → That’s a sector.

Now let’s match them to the positions in the diagram based on where the arrows point:

Looking at the image layout (even though we don’t describe it, we can reason by position):

- Top right box → points to the pie-slice shape → sector
- Right middle box → points to the line from center to edge → radius
- Bottom right box → points to the long line through center → diameter
- Bottom left box → points to the red curved line → arc
- Left middle box → points to the straight line not through center → chord
- Top left box → points to the area between chord and arc → segment
- Center box (pointing to red dot) → center

Wait — actually, looking again at how the arrows are placed:

Let me list the arrows by their direction and what they’re pointing to:

From top going clockwise:

→ Arrow from top-right rectangle: points to the “pie slice” area → sector

→ Arrow from right-middle rectangle: points to the line from center to edge → radius

→ Arrow from bottom-right rectangle: points to the full line across through center → diameter

→ Arrow from bottom-left rectangle: points to the red curved line → arc

→ Arrow from left-middle rectangle: points to the straight line inside circle (not through center) → chord

→ Arrow from top-left rectangle: points to the region between chord and arc → segment

→ Arrow from center-pointing rectangle: points to the red dot → center

Yes, that matches perfectly.

So final labeling:

Top right box → sector
Right middle box → radius
Bottom right box → diameter
Bottom left box → arc
Left middle box → chord
Top left box → segment
Center box → center

All 7 terms used once.

Final Answer:
Top right: sector
Right middle: radius
Bottom right: diameter
Bottom left: arc
Left middle: chord
Top left: segment
Center: center