CROSSWORD IN MATH

4. The line on a graph that runs horizontally (left-right) through zero.
5. A ratio shows the relative sizes of two or more values.
6. In a right angled triangle the square of the hypotenuse is equal to the sum of the squares of the other two sides.
9. A 3-sided polygon (a flat shape with straight sides).
11. A symbol for a number we don't know yet. It is usually a letter like x or y.
13. The starting point.On a number line it is 0.
14. Pair A pair of numbers used to locate a point on a coordinate plane is called an ordered pair.An ordered pair is written in the form (x, y) where x is the x-coordinate and y is the y-coordinate.
15. f -1(x) is said to be the inverse of f(x) if f(f -1(x)) = f -1(f(x)) = x. It is obtained by interchanging the variables x and y of the function.
17. The Father of Geometry.
18. A 2-dimensional shape made by drawing a curve that is always the same distance from a center.

1. Two integers are opposites if they are each the same distance away from zero, but on opposite sides of the number line.
2. Equation An equation where the highest exponent of the variable (usually "x") is a square (2).It is usually written ax2+bx+c = 0.
3. A circle is the length of the line through the center and touching two points on its edge.
5. A triangle that has a right angle (90°)
6. An exact location. It has no size, only position.
7. Axis The line on a graph that runs vertically (up-down) through zero.
8. An obtuse angle is one which is more than 90° but less than 180°.
10. The longest side of a right triangle. The side opposite the right angle.
12. An expression that can have constants, variables and exponents, but no division by a variable.
16. Root The square root of a number is a value that, when multiplied by itself, gives the number.