a line that cuts an angle in half to form two equal angles.
a circle (on the inside) of a polygon and only touches each side at exactly 1 point.
Chord thingy you know, the thing in between the points on the chord.
180 degrees more.
180 degrees less.
An angle whose vertex is at the center of the circle.
An angle formed by two chords whose vertex lies on the circle.
A line segment joining two points on a circle.