Geometry Vocabulary

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