Geometry Vocabulary

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Across
  1. 1. The middle of a line segment
  2. 6. The distance from the center of a circle to a point on the circle
  3. 7. An octagon has eight of them
  4. 8. If the sides of a rectangle are multiplied by three, then the area would be multiplied by ?
  5. 12. The classification of a triangle with two angles measuring 60 degrees
  6. 15. The instrument used to measure angles
  7. 17. The set of all points in a plane that are a given distance from a point, known as the center
  8. 19. A pair of angles whose sum is 90 degrees
  9. 21. A quadrilateral has four of them
  10. 23. A geometric object that extends infinitely in only one direction
  11. 25. Two angles that have a common side and a common vertex but do not overlap are called ? angles
  12. 26. The sum of two sides of a triangle must be ? than the third side
  13. 28. In a triangle, the three vertices can never be ?
  14. 29. If all the sides and all the angles of a polygon are congruent, the polygon is called ?
  15. 31. Triangles that are the same shape, but not the same size
  16. 32. The relationship between angle measures in similar triangles
  17. 33. An angle with measure greater than 90 degrees
  18. 34. A comparison of two quantities
Down
  1. 2. A flat surface with no thickness
  2. 3. A triangle with two congruent angles
  3. 4. Lines that do not cross and lie in the same plane
  4. 5. The ratio of the circumference to the diameter
  5. 9. When two lines intersect, two pairs of these angles are formed
  6. 10. The distance around a circle
  7. 11. The sum of the angles in this polygon is 180 degrees
  8. 13. A group of polygons that include squares, rectangles, and trapezoids
  9. 14. Angles whose measures are equal are called ? angles
  10. 15. A polygon with five sides
  11. 16. To find this measurement of a circle you find the product of Pi and the square of the radius
  12. 18. The number used to enlarge or reduce the dimensions of a triangle
  13. 20. Two angles which are both congruent and supplementary must each be ? angles
  14. 22. A triangle with no two sides congruent
  15. 24. The smallest measurement for the third side of a triangle if two sides measure four and five
  16. 27. A segment whose midpoint is the center of a circle
  17. 30. Two angles which are complementary must each be ?