Key 8th Grade Math Vocabulary Terms

What do alternate exterior angles become when the lines are parallel?

• Perpendicular

• Congruent

• Supplementary

• Complementary

What tool is used to measure angles?

• Calculator

• Protractor

• Compass

• Ruler

What does the coordinate plane consist of?

• X-axis and Y-axis

• Positive and Negative Numbers

• Lines and Circles

• Integers and Fractions

What is a function?

• A relation where each input has exactly two outputs

• A mathematical expression

• A relation where each input has exactly one output

• A type of graph

What is an irrational number?

• A number that cannot be written as a fraction

• A number that is a perfect square

• A number that can be written as a fraction

• A number that is always negative

What does a negative slope indicate?

• No correlation

• Cannot be determined

• Negative correlation

• Positive correlation

What does the Pythagorean theorem help to find?

• The circumference of a circle

• The missing sides of a right triangle

• The volume of a sphere

• The area of a circle

What is a scatter plot used for?

• To represent algebraic equations

• To compare two sets of data

• To calculate the volume of shapes

• To draw perfect circles

What is the slope-intercept form of a linear equation?

• ax^2 + bx + c = 0

• y = mx + b

• y^2 = x^2 + c

• x = my + b

What is the volume formula for a cylinder?

• V = 4/3πr^3

• V = πr^2h

• V = 1/3πr^2h

• V = πr^3