Construction Geometry

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Across
  1. 3. a unit of measurement for angles
  2. 5. a closed shape that has three sides and three angles
  3. 6. an angle that is greater than 0 degrees but less than 90
  4. 8. the combined ___________ of the triangle are equal to 180 degrees
  5. 13. a triangle that has two equal sides and two equal angles
  6. 15. a mathematical process used to solve a problem
  7. 16. a mathematical constant value approximately equal to 3.14
  8. 18. an angle that is 180 degrees or a flat line
  9. 19. the distance around the curved line that forms the circle
Down
  1. 1. a line drawn from one corner of a rectangle or square to the farther opposite corner
  2. 2. a four sided shape with four 90 degree angles
  3. 4. the distance around the outside of a closed shape
  4. 7. two angles that are formed by two straight lines crossing
  5. 8. the amount of space contained in a two-dimensional object
  6. 9. an angle that is greater than 90 degrees but less than 180 degrees
  7. 10. angles that have the same vertex and one side in common
  8. 11. an angle that is 90 degrees
  9. 12. the distance from a circle's center point to any point on the curved line
  10. 14. to divide into two equal parts
  11. 17. the length of a straight line that crosses from one side of a circle, through the center point, to a point on the opposite side