8th Grade Math Vocabulary

27 terms by lpierce 

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Adjacent angles

angles that share a vertex and a side but have no interior points in common.

Coefficient

the numerical factor in any term of polynomial

Constant

in a polynomial, a term that does not contain a variable is a constant

Distance formula

D=RT

Domain

the set of the first coordinates

Formula

an equation that shows the relationship between two or more quantities

Hypotenuse

in a right triangle, it is the longest side which is opposite the right angle

Lateral area

the sum of the areas of the lateral surfaces of a solid.

Legs of a right triangle

the two sides that form the right angle

Linear equation

an equation where all of its solutions lie on a line

Linear inequality

an inequality that can be written y<mx+b with these symbols < > < >

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

Range of a function

all y values are out put variables

Rational number

any number written as a quotient of two integers where the denominator is not zero.

Scatter plot

a graph that displays two sets of data as ordered pairs

Scientific notation

the first function is greater than or equal to 1 and less than 10, and the second factor is a power of 10

Slope intercept form

an equation written in the form y=mx+b is in slope-intercept form. The graph is a line with slope m and y-intercept b.

Slope

the slant of a line that describes steepness.

Solids

three dimensional figures are objects that do not lie in a plane. They have length width and height

Prism

a solid with two parallel and congruent polygonal faces called bases. A prism is named for the shape of its base

Cones

figure that has exactly one circular base and one vertex

Cylinder

a figure that has two bases that are parallel

Pyramids

a solid with triangular faces that meet at a vertex

Standard form

a number written using digits and place value is in standard form

Surface area

the sum of the areas of its surface

Term

a number, a variable, or the product of a number and a variable

X-Y Intercepts

the x and y-coordinates of the point where a line crosses the x or y-axis.

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