## Glossary of 8th Grade Math

### Deck Info

#### Description

#### Tags

#### Other Decks By This User

- Acute Angle

pg 70 - An Angle that has a degree measure between 0 and 90.

- Acute Triangle

pg 70 - A triangle with three acute angles.

- Addition Property of Equality

pg 44 - Adding the same member to each side of an equation results in a equivalent equation.

- Adjacent Angles

pg 64 - Angles that have a common side, the same vertex,

and do not overlap.

- alternate exterior angles

pg 66 - When a transversal intersects two lines and on opposite sides of the transversal.

1 2

3 4

5 6

7 8

- Alternate interior Angles

pg 66 - When a transversal intersects two parallel lines, the angles between the two lines and on opposite sides of the transversal.

1 2

3 4

5 6

7 8

- Altitude of a Triangle

pg 89 - A line segment from a vertex and perpendicular to the opposite side.

- Angle

pg 70 - Two rays with a common endpoint.

DEF = DEF

- Arithmetic Sequence

pg 3 - A list of numbers where consecutive numbers have the same difference.

- Associative Properties

pg 10 - The way in which addends or factors are grouped does not changed the answer.

- Average

pg 150 - Adding the numbers together, and dividing the sum by the addends.

- base (of an exponent)

pg 4 - The number that is used as a factor in a power.

In the base is 4.

- bisect

pg 78 - To separate a figure into two congruent parts.

- box and whisker plot

pg 156 - A way to organize numerical data to show the median, quartile, and interquartile range.

- Circle

pg 89 - A plane figure formed by all points that are the same distance from a given point in the plane called the center.

- Circumcenter

pg 89 - The intersection of the three perpendicular bisectors of the sides of a triangle. It is used to draw a circumscribed circle around a triangle.

- Common Factor

pg 94 - A whole number that is a factor of two or more given whole numbers. 3 is a common factor of 6 and 9.

- Common Multiple

pg 96 - A whole number that is multiple of two or more givine whole numbers. 36 is a common multiple of 6 and 9.

- Commutative Properties

pg 10 - The order in which numbers are added or multiplied does not change the answer.

8 + 5 = 5 + 8

2 x 30 = 30 x 2

- Complementary angles

pg 64 - Two angles are complementary of the sum of their degree measures is 90.

- Congruent Figures

pg 68 - Figures that have the same size and shape.

- Constructions

pg 78 - Drawings made with a straighedge and a compass.

- Correlation

pg 160 - Relationship between two variables.

- Corresponding angles

pg 66 - When a transversal intersects two parallel lines, the angles in similar positions.

1 2

3 4

5 6

7 8

- Cube Root

pg 6 - One of three equal factors of a number. 2 is the cube root of 8

since 2 x 2 x 2 = 8

- Data

pg 148 - Numerical information

- Decimal (Decimal fraction)

pg 104 - A way of expressing factions that have denominators of 10,100, 1000 and so on.

- Degree

pg 64 - A common unit of measure for angles.

- Diagonal

pg 70 - A line segment from one vertex of a polygon to any nonadjacent vertex.

- Diameter

pg 89 - A chord of a cicle that contains the center of the circle.

- Distributive Property of Multiplication over Addition

pg 10 - The product of a number and a sum is equal to the sum of the products.

2x(4+3)=(2x4)+(2x3)

- Divisible

pg 92 - A number is divisible by another if, upon division, the remainder is zero.

15 is divisible by 5

- Division Property of Equality

pg 46 - Dividing each side of an equation by the same non zero number results in an equivalent equation.

6n=78

n= 13

- Equation

pg 38 - A mathematical sentence with an equals sign.

25-17=8

- Equilateral Triangle

pg 62,70 - A triangle that has three congruent sides.

- Equivalent Equations

pg 44 - Equations that have the same solution.

Examples:

x+3=7 and x=4 .

- Equivalent Fractions

pg 94 - Fractions that name the same number.

- Expanded Form

pg 4 - A form of a number that shows the place value of each digit.

916 = 900 + 10 + 6

916 = (9 x 100) + (1 x 10) + (6 X 1)

- Exponent

pg 4 - A number used to tell how many times the base is used as a factor.

10

- Extremes

pg 156 - Lowest and highest points of a set of numerical data