##### Across

**3.**a line segment that joins to points on a curve**4.**a four sided polygon**5.**an acute that measures 90**7.**distance from center of a circle to any point on that circle circumference**8.**a relationship or expression involving one or more variables**9.**point at which two line segments intersect**10.**line segments that intersect at an 90 degree angle**13.**the space between two intersectinglines or surfaces at or clse to the point they meet at**14.**a location in space**16.**a triangle with all three sides**18.**a line segment joining two points on a circle**19.**connects to points

##### Down

**1.**part of a curve**2.**line segments that never intersect**3.**distance around a circle**6.**a line or ray that divides an angle into two congruent angles**11.**a triangle with all three sides of equal length**12.**a triangle with two equal side lengths**15.**a polygon with three edges and three sides**17.**the shape and relative arrangement of the parts of something