Geometry crossword

2. An amount of space enclosed within a shape or surface.
4. A line with a single end point that goes on and on in one direction.
7. A plat surface that extends to infinity.
9. The points where two or more edges of a geometric shape meet.
10. A line that is not perpendicular or parallel to a given reference.
11. A quadrilateral in which all four sides have equal length, opposite sides are parallel, opposite angles are congruent and the diagonals intersect at right angles and bisect each other at their midpoints.
13. Type of triangle that has one angle measuring exactly 90 degrees.
15. A type of triangle in which all the three sides have different lenghts, and all the angles have different measures.

1. An amount of space that a three-dimensional object can hold or contain.
3. A quadrilateral with at least two parallel sides.
5. A continuous and smooth flowing line without sharp angles or breaks.
6. An angle that measures greater than 90 degrees but less than 180 degrees.
8. A straight line segment that connects two points on a curve, typically a circle.
12. The width or the horizontal measurement of an object.
14. A polygon with nine sides and nine angles.
15. A perfectly round three-dimensional object where every point on its surface is equidistant from its center.