Lines AC and BC are tangent to circle O. Drag A and B to move the tangent lines.
1. When angle C is very large,
C is (close to or far from) circle O.
Major arc AB is (very large or very small or about a semicircle)
Minor arc AB is (very large or very small or about a semicircle)
A and B are (close to or far from) one another on circle O.
2. When angle C is very small,
C is (close to or far from) circle O.
Major arc AB is (very large or very small or about a semicircle)
Minor arc AB is (very large or very small or about a semicircle)
A and B are (close to or far from) one another on circle O.
3. Finish the sentence: When A and B form a diameter of circle O, angle C is equal to _____.
4. Make angle C equal to 90 degrees. What kind of angle is formed by AOB in this case?
5. Can you ever get major arc AB and angle C equal? minor arc AB and angle C?