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philomath_pre_algebra_b_vocabulary_01
vocabulary
16
Mathematics
9th Grade
12/19/2012

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Term
coordinate plane
Definition
A plane that is divided into four regions by a horizontal and a vertical number line.
Term
axis
Definition
One of the intersecting number lines that divide the coordinate plane into quadrants.
Term
x-axis
Definition
The horizontal number line that divides the coordinate plane.
Term
y-axis
Definition
The vertical number line that divides the coordinate plane.
Term
quadrant
Definition
One of the four regions of the coordinate plane formed by the x- and y-axes.
Term
coordinates
Definition
The “address” of a point. Usually written as an ordered pair.
Term
ordered pair
Definition
A pair of x and y values that represents a position on the coordinate plane. The x value is always listed first. Examples: (–5, 6), (113, –257), (x, y).
Term
origin
Definition
The point where the x- and y-axes cross. Its coordinates are (0, 0).
Term
triangle
Definition
A flat figure with three sides.
Term
quadrilateral
Definition
A flat figure with four sides.
Term
trapezoid
Definition
A quadrilateral with one set of parallel sides.
Term
parallelogram
Definition
A quadrilateral with two sets of parallel sides.
Term
rectangle
Definition
A quadrilateral with four right angles.
Term
square
Definition
A quadrilateral with four right angles and four congruent (same-length) sides.
Term
right triangle
Definition
A triangle with one right (90ยบ) angle.
Term
vertex (vertices)
Definition
The point that forms the corner of a triangle, quadrilateral or other shape.
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