Math Vocab 8th grade

Triangles

100

The longest side in a right triangle.

What is Hypotenuse?

200

The 2 shorter sides in a right triangle.

What are legs?

300

Triangle Inequality Theorem.

 What is "The sum of 2 sides in a triangle must be > the remaining side"? 

400

Pythagorean Theorem.

What is a²+b²= c² in a right triangle?

A & B = legs

C= hypotenuse

500

How to determine if a triangle is a right triangle using the side lengths(no angles or estimating).

What is the Converse of the Pythagorean Theorem?

Equations, Exponents, Measurement

100

Term.

What is something getting added or subtracted?

Ex:

2+3

5x-9y

200

x=2y

2y+3x

= x+3x

=4x

I used the ___________ _________.

What is the substitution method?

300

2y+3x=4

5y+x=4

5y+x=4 => 15y+3x=12

2y+3x=4 - 15y+3x=12

I used the ________________ _________.

What is the elimination method?

400

5x10⁹ is written in ________________ ___________.

What is scientific notation?

500

When 2 lines don't touch each other, and aren't parallel in a solid.

What is skew lines?

Data Analysis

100

The amount of times something is occurring.

What is frequency?

200

The relationship between 2 variables.

What is bivariate data?

300

When there can't be a trend line in a scatter plot.

What is no association?

400

The other name for a trend line.

What is line of best fit?

500

Divide the frequency of an event by the total number of events(in a dataset).

What is relative frequency?

Functions

100

Parabola.

What is a symmetrical U-shaped curve in a graph?

200

The highest exponent in this function is 2.

What is Quadratic Function?

300

Specific values that can be counted.

What is Discrete Data?

400

Continuous Data.

What is data that doesn't have specific values and is measured?

500

Function definition vs. Function RULE definition.

What is a function is a rule that assigns exactly 1 output to each input, whereas a function RULE is an equation describing the function?

Geometry

100

When 2 angles = 180^o.

What is Supplementary?

200

When 2 angles = 90^o.

What is Complementary?

300

Congruent angles.

What is when multiple angles have the same angle measure?

(Congruent means equal)

400

Reflectional Symmetry.

What is the property of an object that is capable of having a reflectional image that matches the original?

500

Rotational Symmetry.

What is the property of an object that can be rotated 180^o or less and the image will match the original?