Geometry rules

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Across
  1. 2. when you know the hypotenuse and the opposite leg of a right triangle
  2. 3. a line segment with both endpoints on a circle
  3. 6. A triangle with all sides of equal length
  4. 10. angles that add up to 90
  5. 12. angle that is half the arc
  6. 13. double the radius
  7. 14. a quadrilateral with two pairs of consecutive, equal sides
  8. 15. a quadrilateral with four right angles
  9. 16. when you know the opposite and the adjacent sides of a right triangle
  10. 17. the measure of any side or angle is equal to itself
  11. 18. a quadrilateral with four right angles and four sides of equal length
  12. 20. a line that is perpendicular to the circles radius
Down
  1. 1. a circles perimeter
  2. 4. the set of points equidistant from a central point
  3. 5. congruent theorem when two right triangles have one equal leg and an equal hypotenuse
  4. 7. a polygon with four sides
  5. 8. When two triangles have two pairs of congruent sides
  6. 9. triangles that are similar and have a common ratio of 1
  7. 11. When you know the hypotenuse and the adjacent leg of a right triangle
  8. 18. angles that add up to 180
  9. 19. angle that is in a circle with its vertex at the center of the circle