Geometry 3rd 9 week Project

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Across
  1. 2. The lengths of the two legs of a right triangle, a and b, to the length of the hypotenuse.
  2. 4. An area of mathematics dealing with three-dimensional solids plane shapes, points, lines, curves, surfaces and angles, and their position, size and relationships in space.
  3. 6. A ratio of the length of the opposite side to the length of the hypotenuse.
  4. 11. Logical transformations of an "if-then" statement that negates both the hypothesis and conclusion
  5. 12. A plane shape bounded by a continuous line which is always the same distance from the centre.
  6. 13. Has opposite sides that are parallel and of equal length and opposite angles that are equal.
  7. 16. Straight one-dimensional figure of infinite length.
  8. 17. Two angles that form a straight line or are formed by intersecting lines and total 180º.
  9. 19. A ratio of the length of the adjacent side to the length of the hypotenuse.
  10. 20. Logical transformations of an "if-then" statement that switches the hypothesis and conclusion.
Down
  1. 1. A ratio of the length of the opposite side to the length of the adjacent side.
  2. 3. The distance around a circle
  3. 5. A triangle with one obtuse angle. An obtuse angle measures between 90º and 180º.
  4. 7. An angle measuring 90º.
  5. 8. A straight line passing through the centre of a circle to touch both sides of the circumference.
  6. 9. A polygon with three angles and three sides.
  7. 10. An attempt to explain something with an idea, an educated guess, supposition, suggestion or conjecture that is not yet proven to be true.
  8. 14. Straight line joining two points on the circumference of a circle.
  9. 15. An angle measuring 90º.
  10. 18. A plane figure made up of line segments connected to form a closed polygonal chain.