Across
- 3. a line segment that joins two non-adjacent vertices of a polygon.
- 4. the point where two sides or edges meet.
- 5. lines that meet at a right angle.
- 6. a straight edge of a polygon.
- 7. an angle that is greater than 90 degrees but less than 180 degrees.
- 8. a flat surface that extends infinitely in all directions.
- 10. an angle that measures exactly 90 degrees.
- 11. a position in space with no size or shape.
Down
- 1. a polygon with four sides.
- 2. lines that never meet and are always the same distance apart.
- 6. when one half of a shape is the same as the other half.
- 9. an angle that is smaller than 90 degrees.
