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19 Cards in this Set

  • Front
  • Back
Abscissa
The first number of an ordered pair; the x-coordinate
Converse
When the parts of a theorem are reversed.
Coordinate Plane
A plane in which a horizontal number line and a vertical number line intersect at their zero points.
Hypotenuse
The side opposite the right angle in a right triangle.
Irrational Number
A number that cannot be expressed a fraction. Pi is an example.
Legs
The two sides of a right triangle that form a right angle.
Ordered Pair
A pair of numbers used to locate a point in the coordinate plane
Ordinate
The second number of an ordered pair; the y-coordinate.
Origin
The point of intersection of the x-axis and y-axis in a coordinate plane.
Perfect Square
A rational number whose square root is a whole number.
Pythagorean Theorem
In a right triangle
Quadrants
The four regions into which the two perpendicular number lines of the coordinate plane separate the plane.
Radical Sign
The symbol used to indicate a nonnegative square root.
Real Number
The set of rational numbers together with the set of irrational numbers.
Square Root
One of the two equal factors of a number.
X-Axis
The horizontal number line that helps to form the coordinate plane.
X-Coordinate
The first number of an ordered pair.
Y-Axis
The vertical number line that helps form the coordinate plane.
Y-Coordinate
The second number of an ordered pair.