8th grade Math Vocabulary: Ch 1-9

Angles that are in the same position on two parallel lines in relation to a transversal.

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If one image can be obtained from another by a sequence of transformation and dilations.

A symbol,usually a letter, used to represent a number in mathematical expressions or sentences.

The final step of an equation yields a solution that is true, such as 4=4

A transformation that enlarges or reduces a figure by a scale factor.

A mathematical expression used to represent a decimal number between 1 and 10 multiplied by ten

A transformation where a figure is flipped over a line. Also called a flip.

A function whose rate of change is not constant.The graph of this function is not a straight.

angles that lie next to one another

Two lines that intersect to form right angles.

the usual or common way to write a number using digits

The four outer angles formed by two lines cut by a transversal. (look at picture)

An equation with a graph that is a straight line. Slope intercept form of this is y=mx+b.

A2 times B2 equals C2 (look at picture)

The final step of an equation yields a single solution, such as x=2

Terms that contain the same variable(s) to the same powers.

One of three equal factors of a number

The y-coordinate of the point where the line crosses the y-axis.

Lines that never intersect no matter how far they extend.

A relationship that has a straight-line graph.

An algebraic model that can be used to find the exact solution of a system of equations.

The rate of change between any two points on a line.

a solid object with a circular flat base joined to a curved side that ends in an apex point

The final step of an equation yields a solution that is false, such as 3≠5

a line drawn on a scatter plot to estimate 2 sets of data

a three dimensional object shaped like a ball

a solid object with two identical flat ends that are circular or elliptical and one curved side

The four inside angles formed by two lines cut by a transversal. (look at picture)

Opposite angles formed by the intersection of two lines.

Pairs of operations that undo each other.

A transformation that slides a figure from one position to another without turning.

The number next to the variable.

A transformation in which a figure is turned about a fixed point.

To multiply a sum by a number, multiply each addend by the number outside the parentheses.