Geometry Terms Crossword Puzzle

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Across
  1. 8. A 3D shape similar to a pyramid, but with a circular base
  2. 11. The amount of space that a 3D shape takes up
  3. 12. A triangle with sides that are all equal in length in called _____ triangle.
  4. 13. A 180 degree angle is called _____ angle.
  5. 14. A 3D shape with a polygonal base and flat triangular faces, which join at a common point called the apex
  6. 16. A triangle with three sides that are all different in length is called _____ triangle.
  7. 17. A triangle with (at least) two sides of equal length is called _____ triangle.
  8. 18. An angle over 180 degrees is called _____ angle.
  9. 20. A 3D shape where each point on the boundary is the same distance away from the centre
  10. 22. A polygon with three sides
  11. 25. A 90 degree angle is called _____ angle.
  12. 27. The perimeter of a circle
  13. 29. A 3D shape with two identical parallel faces (called the bases) and lateral faces that are rectangles or parallelograms
  14. 31. A transformation that 'flips' a shape across a straight line
  15. 33. A 3D shape similar to a prism, but with circular bases
  16. 34. The distance across a circle through the centre
  17. 35. The distance from the centre of a circle to any point on the boundary
  18. 36. A 2D shape where each point on the boundary is the same distance away from the centre
Down
  1. 1. A quadrilateral with four right angles
  2. 2. A transformation that moves each point of a shape in the same direction and by the same distance
  3. 3. A figure consisting of two rays which diverge from a common point
  4. 4. Two lines that intersect forming right angles are called _____ lines.
  5. 5. A transformation that turns a shape around a centre point
  6. 6. A quadrilateral with four right angles and four sides of equal length
  7. 7. The total length of the boundary of a 2D shape
  8. 9. An angle between 90 and 180 degrees is called _____ angle.
  9. 10. The _____ area of a 3D shape is the total area of all its faces.
  10. 15. An angle of less than 90 degrees is called _____ angle.
  11. 19. A quantity that can be measured using a ruler or measuring tape.
  12. 21. A quadrilateral with two pairs of parallel sides
  13. 23. A 2D representation of a 3D shape that shows what it looks like if it the 3D shape is opened out flat.
  14. 24. Straight lines that do not intersect are called _____ lines.
  15. 26. A quadrilateral with at least one pair of parallel sides
  16. 27. A 3D shape with six square faces
  17. 28. A 3D shape with six rectangular faces
  18. 30. A tool used to draw circles
  19. 32. The _____ of a rectangle is calculated by multiplying its length by its width.
  20. 35. A tool used to measure lengths and draw straight lines