Across
- 2. A closed plane curve every point of which is equidistant from a fixed point within the curve.
- 6. Being or forming an angle measuring less than 90 degrees.
- 7. An instrument for laying down and measuring angles.
- 12. Exceeding 90 degrees but less than 180 degrees.
- 13. A branch of mathematics.
- 15. Having all sides equal.
- 17. The dimensions or capacity of something.
- 18. Having three sides of unequal length.
- 19. A polygon having three sides.
Down
- 1. A closed plane figure bounded by straight lines.
- 3. Polygon of four sides.
- 4. A line that intersects a system of lines.
- 5. Free from curves, bends, angles, or irregularities.
- 8. Having the difference divisible by a given modulus.
- 9. Joining two vertices of a rectilinear figure that are non adjacent.
- 10. The length of a straight line through the center of an object.
- 11. A straight line segment joining and included between two poins on a circle.
- 14. A unit of measure for arcs of a circle equal to the amount of arc that subtends a central angle of one degree.
- 16. Having two equal sides.
- 20. A line segment extending from the center of a circle or sphere to the circumference or bounding surface.