4. Central Angle:
.
C
an angle that has it's vertex
at the centre, two radii form A .
the arms of the angle.
.
O
Central angle AOC is
subtended by the chord AC
and by the arc AC. .
B
4
5. Inscribed angle:
.
C
an angle that has it's vertex on
the circle, and two chords
form the arms.
A .
.
O
Inscribed angle ABC is
subtended by the chord AC, and
by the arc AC. .
B
5