Across
- 2. Polygon with four equal sides
- 4. Angle formed by perpendicular lines
- 6. Number of sides in a quadrilateral
- 8. Another word for congruent
- 11. Number of equal sides in equilateral triangle
- 12. Place where lines intersect
- 13. Two angles added together
- 15. Triangle with no equal sides
- 17. Number of equal sides in isosceles triangle
- 19. Unit used to measure angles
- 20. Angle less than 90 degrees
- 21. A ruler measures this
Down
- 1. Pair of lines that never meet
- 2. Angle measuring 180 degrees
- 3. Base times height
- 5. 3-sided polygon
- 7. Angle between 108 and 30 degrees
- 9. Operation to find difference
- 10. Triangle with an angle over 90 degrees
- 12. Multiplication of numbers
- 14. Set of points passing through tow points
- 15. Angle measure in degrees for equilateral triangle
- 16. Corner point of angle
- 18. Number of obtuse angles in obtuse triangle
- 22. Sum of complementary angles in degrees