The inscribed angle
Answers are for parents and teachers.
1
An inscribed angle subtends an arc of 170°. How many degrees is the angle?
85
2
An inscribed angle is 72°. How many degrees is its arc?
144
3
Triangle ABC is inscribed in a circle and ∪BC = 120°. How many degrees is ∠A?
60
4
The central angle is ∠AOB = 150°. How many degrees is ∠ACB for a point C on the larger arc?
75
5
Why are inscribed angles subtending the same arc equal? Write it in your own words.
Each is measured by half of that arc, and the arc is the same.