Across
- 5. A figure that is closed in with straight sides
- 9. A polygon with three sides
- 11. A part of figure that is intersected by another line
- 13. The area of a circle
- 14. The length of a straight line that passes through the center of a circle
- 15. When two lines exist alongside each other without ever intersecting
Down
- 1. An angle that is less than 90 degrees in measure
- 2. The space between the vertex of two intersecting lines meet
- 3. When two lines intersect an angle of 90 degrees
- 4. To correspond in shape
- 6. An angle that is more than 90 degrees in measure
- 7. When two lines pass through each other
- 8. A triangle with three acute angles
- 10. A triangle with 2 acute angles and one obtuse angle
- 12. The point where two intersecting lines meet