Across
- 3. in or near an inner area
- 4. a triangle with two equal sides
- 6. a straight line from the center to the perimeter of a circle
- 7. two angles whose sum is a right angle
- 10. a quantity obtained by the addition of a group of numbers
- 12. combination of three or more notes that blend harmoniously
- 13. a four-sided polygon
- 14. a continuous portion of a circle
Down
- 1. a surface generated by rotating a line around a fixed line
- 2. elevation above sea level or above the earth's surface
- 5. a three-sided regular polygon
- 8. a triangle whose interior angles are all acute
- 9. a round three-dimensional closed surface
- 11. an angle less than 90 degrees but more than 0 degrees
- 12. the length of the closed curve of a circle