Geometry Vocabulary

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Across
  1. 3. The ratio of a circle's circumference to its diameter.
  2. 7. A shape made up of two or more geometric figures.
  3. 11. A round figure with all points equidistant from the center.
  4. 12. Angles whose sum is 90 degrees.
  5. 13. Two angles that share a side and a vertex.
  6. 14. The corner of an angle or shape.
  7. 16. Half of a circle.
  8. 22. The total area of all the faces of a 3D shape.
  9. 23. The distance from the center of a circle to any point on the outside.
  10. 24. A 3D shape whose sides are all rectangles.
  11. 27. A 3D shape with one base and triangular sides that meet at a point.
  12. 28. Angles whose sum is 180 degrees.
  13. 29. The distance around a circle.
  14. 31. The exact middle of a circle.
Down
  1. 1. Having a constant ratio to another quantity or size.
  2. 2. A triangle with 3 equal sides.
  3. 3. The distance around a shape.
  4. 4. Volume is measured in ________ units.
  5. 5. The number of cubic units it takes to fill a three-dimensional shape.
  6. 6. The ratio between two identical objects of different sizes.
  7. 8. A box-shaped solid with six equal faces.
  8. 9. The number of square units it takes to fill a two-dimensional shape.
  9. 10. A 3D shape with two triangular bases at either end, connected by rectangular faces.
  10. 15. Area is measured in ________ units.
  11. 17. A triangle with 2 equal sides and one side of a different length.
  12. 18. The bottom side of a shape.
  13. 19. Pair of opposite and equal angles created by intersecting lines.
  14. 20. An angle greater than 90 but less than 180 degrees.
  15. 21. An angle less than 90 degrees.
  16. 25. A triangle with 3 different side lengths.
  17. 26. The distance across the middle of a circle.
  18. 30. An angle equal to 90 degrees.