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19 terms

Pre Algebra Chapter 3 Vocab

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abscissa
x-coordinate; 1st coordinate in an ordered pair
converse
the reverse parts of the Pythagorean Theorem
coordinate plane
a plane in which a horizontal number line and a verical number line intersect
hypotenuse
the side opposite the right angle in a right triangle
irrational number
a number that cannot be expressed as a fraction
legs
the two sides of a right triangle that form the right trangle
ordered pair
A pair of numbers that can be used to locate a point on a coordinate plane
ordinate
the second number of an ordered pair
origin
the intersection of the y-axis and the x-axis on a coordinate plane
perfect square
a number that is the square of an integer
Pythagorean Theorem
in any right triangle, the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse
quadrants
four regions into which a coordinate plane is divided by the x-axis and the y-axis
radical sign
the symbol used to indicate a non-negative square root
real number
any rational or irrational number
square root
a number which when multiplied by itself gives the original 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 to form the coordinate plane
y-coordinate
the second number of an ordered pair