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