Math - Crossword Labs

2. the angle bounded by two lines perpendicular to each other
4. a six-sided polygon
5. if their corresponding angles are congruent
10. a proposition or statement that is demonstrated.
11. a line that intersects two or more other lines.
13. a dot and named by a capital letter
15. used to define the amount of space taken up by a 2D shape or surface.
16. a plane figure with ten straight sides and angles.
17. the basic structure from which lemmas and theorems are derived
18. the perpendicular segment from a vertex of a triangle to the opposite side
20. a line or ray that divides an angle into two congruent angles

1. a pair of adjacent angles formed when two lines intersect.
3. exceeding 90 degrees but less than 180 degrees.
6. a point at or near the middle of, or equidistant from, both ends, as of a line
7. gives the distances between pairs of points in terms of their coordinates
8. a parallelogram also has two pairs of equal-length sides, but they are opposite to each other
9. the distance around the edge of a shape.
12. infinitely long collection of points extending in two opposite directions
13. a flat, two-dimensional surface that extends infinitely far.
14. a line that has one endpoint and goes on infinitely in only one direction
19. to the opposite of another operation.