Crossword

2. The line on a graph that runs horizontally (left-right) through zero.
4. A symbol for a number we don't know yet. It is usually a letter like x or y.
7. The Father of Geometry
10. A 3-sided polygon (a flat shape with straight sides).
11. 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.
13. A triangle that has a right angle (90°).
14. The longest side of a right triangle. The side opposite the right angle.
16. An exact location. It has no size, only position.
17. The line on a graph that runs vertically (up-down) through zero.
18. Two integers are opposites if they are each the same distance away from zero, but on opposite sides of the number line.
20. ratio shows the relative sizes of two or more values.

1. An equation where the highest exponent of the variable (usually "x") is a square (2).It is usually written ax2+bx+c = 0.
3. 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.
5. An obtuse angle is one which is more than 90° but less than 180°.
6. study of the relationships between the angles and the sides of a right triangle.
8. A circle is the length of the line through the center and touching two points on its edge.
9. A 2-dimensional shape made by drawing a curve that is always the same distance from a center.
12. The starting point.On a number line it is 0.
15. An expression that can have constants, variables and exponents, but no division by a variable.
19. Root The square root of a number is a value that, when multiplied by itself, gives the number.