Across
- 1. lines that intersect and form a right angle
- 5. line segments that go from a point on the circle to the center
- 6. lines that will never meet
- 8. the number of sides and angles in a decagon
- 9. lines that meet
- 10. a parallelogram with congruent sides
- 11. a polygon with three sides
- 12. a parallelogram with four right angles
- 16. a parallelogram and a rhombus and a rectangle
- 18. a triangle with three angles less than 90 degrees
- 19. part of the circle
- 20. extends forever only at one end
- 21. two rays with a shared endpoint
- 22. an angle that is exactly 90 degrees
- 24. a triangle with no congruent sides
- 26. a line segment that touches two ends points on a circle and passes through the center
- 27. where two rays meet to form an angle
- 30. an angle that is less than 90 degrees
- 32. a shape with sides and angles
- 34. a line segment that has two endpoints on a circle
- 35. a polygon with eight sides
- 37. extends forever at both ends
- 38. a triangle with one angle more than 90 degrees
- 39. the number of sides and angles in a hexagon
Down
- 2. a triangle with three congruent sides and angles
- 3. two angles that together add up to 90 degrees are ___ angles
- 4. part of a line between two fixed points
- 5. a triangle with one angle exactly 90 degrees
- 7. an exact location
- 10. half a diameter
- 13. angles that are next to each other on the same line and are supplementary
- 14. an angle that is 180 degrees
- 15. two angles that together add up to 180 degrees are ___ angles
- 17. a polygon with four sides
- 23. ___ angles are made up of two radii
- 25. a polygon with five sides
- 28. a triangle with two congruent sides
- 29. angles that are across from each other and have the same measure
- 31. a quadrilateral that is not a parallelogram
- 33. a set of points that are all the same distance from a given center
- 36. an angle that is more than 90 degrees