6.1 Angle at the circumference and central angle subtended by an arc
Adjust the length of Arc AB. Then, observe the angle AXB and BYA.
Are the angle [math]\angle[/math]AXB = [math]\angle[/math]BYA when the length of Arc AB changed?
No
Yes
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Information: 6.1 Angle at the circumference and central angle subtended by an arc