Across
- 3. They are four-sided shapes
- 4. all angles are acute in a triangle
- 5. a seven-sided polygon
- 7. two sides of a triangle are equal
- 11. a straight line connecting two points on the edge of a circle
- 12. an angle formed inside a polygon where two sides meet
- 14. perimeter of a circle
- 15. straight line joining two points on the circumference of the circle
- 16. triangle where one of the interior angles is more than 90 degrees
- 18. triangle that has one 90-degree angle
- 20. any angle that is above 180 degrees
Down
- 1. an angle that equals 360 degrees
- 2. Triangle where no sides or angles are congruent
- 6. quadrilateral that has two sets of parallel sides and no angles are 90 degrees
- 8. Two angles whose sum is 180 degrees
- 9. Two angles whose sum is 90 degrees
- 10. distance from the centre to the circumference of a circle
- 13. part of a circle surrounded by two radius
- 17. a line that touches a circle at one point from the outside
- 19. Polygon that has 10obtuse