##### Across

**2.**A line segment connecting two points on a curve**3.**equal arcs**8.**a closed segment of a differentiable curve**9.**an arc of a circle having measure less than or equal to 180 degrees**10.**a line that intersects two points on the curve**12.**is an arc of a circle having measure greater than or equal to 180 degrees**13.**a half of a circle**15.**is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle.**17.**the point wear the tangent touches the circle**19.**is the arc that is formed when segments intersect portions of a circle and create arcs**21.**the distance around a circle**22.**The center of a circle is the point which is equidistant from all points on the circle.

##### Down

**1.**Non-overlapping arcs with the same radius and center, sharing a common endpoint.**2.**a line that is tangent to each of two coplanar circles**4.**the length of an arc**5.**circles with a common center**6.**a round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the center).**7.**an angle formed by two chords in a circle which have a common endpoint**11.**approximately 3.142**14.**half the diameter. any straight line segment that touches both the center of the circle and somewhere on the circle.**16.**the angle that forms when two radii meet at the center of a circle**18.**a figure is one that is drawn inside another**20.**- A line which touches a circle or ellipse at just one point.**21.**A line segment connecting two points on a curve