Parts of Circles Crossword

What is a round plane in which a center point is equidistant from the circumferance
A straight line in a circle from the center to the circumference
A straight line segment who's endpoints are both in the circle
A line that runs from one end of a circle to the other in a straight line
A straight line that cuts a curve in two or more parts
A straight line that touched the curve from outside the circle
The point where the tangent line touches the circle
An angle with endpoints on the circumferance and the vertex in the center, it also determines the Arc.
Two chords that share an endpoint which forms the vertex. The other endpoints form the intercepted arc
A closed segment of a differentiable curve
An arc of a circle having measure less than or equal to (radians)
An arc of a circle having measure greater than or equal to (radians)
Half of a circle or its circumferance