Upgrade to remove ads
8th Grade Math Vocabulary
Terms in this set (48)
Angles that share a common vertex, a common side, and do not overlap.
Alternate Exterior Angles
Exterior angles that lie on opposite sides of the transversal. They are equal in measure.
Alternate Interior Angles
Interior angles that lie on opposite sides of the transversal. They are equal in measure.
In a power it is the number that is the common factor.
Figures with the same shape and size. Rotations, reflections, and translations are create congruent figures.
Rate of Change
Also called the slope of a line. It is the difference of the y values over the difference in the x values.
To match up. For example, side lengths or angle measures that are in matching locations.
The opposite of cubing. It calculates the side lengths of a cube.
A transformation that enlarges or reduces a figure by a scale factor.
Calculates the distance between any two points (x₁, y₁) and (x₂, y₂) on the coordinate plane.
In a power, the number of times the base is used as a factor.
The side opposite the right angle in a right triangle.
The resulting figure after a transformation.
A number that cannot be expressed as the quotient a/b, where a and b are integers. This includes imperfect roots; non-terminating, non-repeating decimals; pi
The two sides of a right triangle that form the right angle.
An equation whose graph is a straight line. It has a constant rate of change.
Lines that never intersect.
Two lines that intersect to form a right angle.
Calculates the missing side lengths of a right triangle. The square of the length of the hypotenuse, c, is equal to the squares of the lengths of the legs a and b.
Numbers that can be written as the ratio of two integers. This includes, integers, mixed fractions, percents, repeating decimals, terminating decimals, and perfect roots.
The set of all rational and irrational numbers.
The multiplicative inverse of a number. The product of a number and its reciprocal is 1.
A transformation where a figure is flipped over a line called the line of reflection.
A polygon with equal side lengths, equal interior angle measures, and equal exterior angle measures.
An angle whose measure is exactly 90°.
A triangle with one right angle.
A transformation in which a figure is turned about a fixed point called the center of rotation.
The ratio of the lengths of two corresponding sides of two similar polygons.
Two figures with the same shape, same angle measures, but different size. The side lengths of similar figures are proportional to each other. Dilations create similar figures.
The rate of change between any two points (x₁, y₁) and (x₂, y₂) on a line. Its the ratio of the rise (the vertical change) over the run (the horizontal change).
An equation written in the form y=mx+b, where m is the slope and b is the y-intercept.
An equation written in the form Ax+By=C
Two angles whose sum is 180°.
A movement on a pre-image to a new figure, called the image. Translations, reflections, rotations, and dilations are the types of transformations.
A transformation that slides a figure from one location to another.
A line that crosses over two or more other lines.
A ratio with a denominator of 1.
Angles that are directly opposite each other. They have the same angle measure.
The horizontal number line that helps to form the coordinate plane.
the x-coordiante of the point where a line crosses the x-axis.
The vertical number line that helps to form the coordinate plane.
The y-coordinate of the point where the line crosses the y-axis.
Positive and negative whole numbers.
The equivalence of two fractions.
A many-sided figure.
A ratio of two quantities with different units.
Interior Angle Sum of a Polygon
Interior Angle Sum of a Triangle
Exactly 180°, no matter the size of the triangle.
YOU MIGHT ALSO LIKE...
RRISD Geometry Unit 2B - Characteristics…
Massive Vocabulary Quiz
Math Final Vocabulary- All Terms!
FINAL: Math~All Terms
OTHER SETS BY THIS CREATOR
Africa Unit Exam: Review
Chinese Chapter 2 Pinyin
Chinese Chapter 2
Chinese Cities/Countries Pinyin