Across
- 2. Numbers with the same absolute value but different signs.
- 7. The distance of a number from zero.
- 8. A visual representation of numbers on a straight line.
- 9. Two lines on a flat surface that do not meet.
- 11. Identical shapes with the same size.
- 12. A triangle with one obtuse angle.
- 14. The imaginary line passing through the center of a polygon that divides the shape into two equal parts.
- 16. A triangle with one right angle.
- 17. A three-sided polygon.
- 18. A quadrilateral with two pairs of parallel sides and four right angles.
- 19. A many-sided shape.
- 20. A triangle with no congruent sides.
- 21. An eight-sided shape.
Down
- 1. A polygon with equal sides and equal lengths.
- 3. A five-sided shape.
- 4. A rectangle with all sides congruent.
- 5. A triangle with at least two congruent sides.
- 6. A four-sided polygon.
- 10. A triangle with three acute angles.
- 13. A triangle with all three sides congruent.
- 15. The sum of the lengths of the sides of a polygon.