Geometry Crossword Puzzle

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Across
  1. 2. Any line segment from its center to its perimeter
  2. 3. Having a common vertex and a common side
  3. 5. Refers to a property of lines or planes
  4. 7. Anything equals itself
  5. 12. A plane curve at a given point is the straight line
  6. 13. A line segment from the center to the midpoint of one of its sides
  7. 14. Joins the midpoints of two sides of a triangle
  8. 16. The point at which a curve intersects an axis
  9. 17. A polygon with four sides
  10. 19. Angle An angle inside a shape
  11. 21. The abbreviation of a theorem involving congruent triangles
  12. 22. The longest side of a right-angled triangle
  13. 23. A mathematical statement that asserts the equality of two expressions
Down
  1. 1. Passes through the midpoint of the segment
  2. 4. A quadrilateral with at least one pair of parallel sides
  3. 5. Describes the relationship between two geometric objects that meet at a right angle
  4. 6. All sides of the same length
  5. 8. A geometric shape that tapers smoothly from a base to a point
  6. 9. A polyhedron formed by connecting a polygonal base and a point
  7. 10. A perfectly round geometrical object
  8. 11. any quadrilateral with four right angles
  9. 15. Describes its steepness, incline, or grade
  10. 18. Covers measuring degrees, equations, and formulas
  11. 20. More then 90 degrees