Angles and Fraction Circles

The fraction circles below are divided into thirds, fourths, fifths, and sixths. The angle with the little red sector is opened either 1/3, 1/4, 1/5, or 1/6 of a circle. You can drag the fraction circles over the angle to see how wide the angle is opened. Type your answer into the "fraction" text box by replacing the question mark with the right number.

When you press the "show me how" button, you can see how the fraction circles can be compared to the angle. The part of the circle that matches the angle will be entered into the "control" text box.

Click "my turn" if you want to try matching the same angle again. Click "next" to try a new angle.

Angles

1. Angles and Fraction Circles
2. Angles and Twelfths
3. Angles and Clock
4. Fraction Circles and Clock
5. Angles and Protractor
6. Supplementary Angles Add Up to 180
7. Half Circle Protractor
8. Measure Supplementary Angles
9. How to Name Angles
10. Supplementary Angle Puzzles
11. Connect the Dots: Angles
12. Complementary Angle Puzzles
13. Angle Bisector Puzzles
14. Vertical Angle Puzzles
15. Triangle Tiling
16. Guess the Angle

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