Math Vocabulary Crossword

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Across
  1. 4. A flat shape with four straight sides.
  2. 5. A 4-sided flat shape with straight sides where opposite sides are parallel.
  3. 7. a long thin mark made by a pen, pencil, etc. Is straight (no curves.
  4. 8. Two Angles are Complementary when they add up to 90 degrees (a Right Angle).
  5. 11. A 10-sided polygon
  6. 12. A 6-sided polygon
  7. 14. A triangle that has an angle greater than 90°
  8. 15. The size of a surface.
  9. 16. A 4-sided flat shape with straight sides where all sides have equal length.
  10. 18. A line that links two points on a circle or curve.
  11. 20. a precise location or place on a plane. Usually represented by a dot.
  12. 22. Two nonparallel lines in space that do not intersect
  13. 27. the amount of turn between two straight lines that have a common end point (the vertex).
  14. 28. A portion of a line which starts at a point and goes off in a particular direction to infinity.
  15. 29. An angle which is equal to 90°, one quarter of a full revolution.
  16. 30. A triangle that has all angles less than 90°
  17. 31. A line is perpendicular to another if it meets or crosses it at right angles (90°).
  18. 33. A flat surface with no thickness.
  19. 34. A straight line going through the center of a circle connecting two points on the circumference.
  20. 35. A 7-sided polygon
  21. 36. A straight line inside a shape that goes from one corner to another (but not an edge).
  22. 37. A 9-sided polygon
  23. 39. The distance around the edge of a circle
  24. 40. A 4-sided flat shape with straight sides, all sides have equal length, and every interior angle is a right angle (90°)
  25. 41. a 2-dimensional shape made by drawing a curve that is always the same distance from a center.
  26. 42. A 8-sided polygon
Down
  1. 1. A 4-sided flat shape with straight sides that has a pair of opposite sides parallel.
  2. 2. A 3-sided polygon
  3. 3. Two Angles are Supplementary when they add up to 180 degrees.
  4. 6. A 5-sided polygon
  5. 9. An instrument with two arms, one sharp and one with a pencil that can be used to draw circles or arcs.
  6. 10. An angle whose measure is greater than 180° and less than 360°
  7. 13. A triangle with two equal sides
  8. 17. An obtuse angle is one which is more than 90° but less than 180°
  9. 19. A point on a line segment that divides it into two equal parts The halfway point of a line segment
  10. 20. A plane shape (two-dimensional) with straight sides.
  11. 21. Vertical Angles are the angles opposite each other when two lines cross. They are always equal.
  12. 23. An angle less than 90°
  13. 24. The distance from the center to the edge of a circle
  14. 25. triangles where each side is a different length
  15. 26. An instrument used in measuring or drawing angles
  16. 31. lines on a plane that never meet. They are always the same distance apart.
  17. 32. A 4-sided flat shape with straight sides where all interior angles are right angles (90°).
  18. 38. point where two or more straight lines meet. A corner.
  19. 39. The same shape and size. Two shapes are congruent when you can Turn, Flip and/or Slide one so it fits exactly on the other.