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# 8thGradeMathVocab

### TAKS math vocabulary for 8th grade

Question | Answer |
---|---|

Acute angle | An angle measuring more than zero degrees but less than 90 degrees. |

Annual | Once a year |

Approximate | Not exact, but close |

Arithmetic sequence | Set of numbers where the same amount is added each time |

Attached | Connected to |

Bar graph | Graph that uses bars to make comparisons |

Base | A side of a 2-dimensional shape or a face of a 3-dimensional solid |

Based on experimental results | Comes from acting it out |

Based on the trend | Comes from looking at the general direction of past events |

Best approximation | Closest to the exact answer |

Best estimate | Closest to the exact answer |

Best illustrated | The best example |

Box and whisker plot | Graph that shows the median, quartiles and extremes of data |

Calculate | Find the value |

Capacity | How much a container can hold; volume |

Circular | In the shape of a circle |

Circle graph | Graph that compares parts to the whole |

Circumference | The distance around a circle; the perimeter of a circle |

Classify | Sort objects into groups based on one or more characteristics |

Commission | An amount of money paid based on the work done (ex.the more sold, the more earned) |

Complementary angles | Two angles whose sum equals 90 degrees |

Conclusions | Decision based on reasoning |

Congruent | Having the same size and shape |

Consecutive | Numbers that follow each other in order |

Constant | Number that doesn’t change |

Constant rate | Having a consistent amount of change |

Container | An object that can hold something |

Continuously | Without stopping |

Coordinates | A pair of numbers that give the location of a point on the graph |

Coordinate plane | A 2-dimensional system of intersecting lines used to graph points |

Correct place value | The right value for a digits placement in the number |

Corresponding sides | Sides in the same position on congruent or similar shapes |

Cube | A 3-dimensional solid shaped like a box, where all faces are squares |

Cubic unit | A unit for volume |

Cylinder | A solid figure with two congruent and parallel circular bases |

Data | A collection of numbers or measurements |

Data table | An arrangement of numbers or measurements in rows and columns |

Demonstrate | To show how something works or why it is true |

Dependent events | Events in which the outcome of the 1st event affects the outcome of the 2nd event |

Describe | Give the specific characteristics or a figure or situation |

Diagonal | Line segment joining 2 corners that are not next to each other on any polygon |

Dilation | Proportional shrinking or enlarging of a figure |

Dimensions | Measurements of a shape or solid (ex. length, width, and height) |

Displays | verb: shows, noun: graphic representation |

Distance | How far between 2 points |

Double | To multiply by 2 |

Edge | Line that connects 2 faces |

Enlarge | To make bigger |

Equal | The same |

Equal chance | The probability is mathematically the same |

Equation | A mathematical sentence that uses an equal sign |

Equivalent | The same |

Estimate | A rough approximation or calculation |

Evaluate | To find the value of |

Exclude | Leave out |

Experiment | Act it out |

Expression | A combination of numbers and variables connected by one or more operations |

Fair number cube | Dice |

Formula | An equation with variables used for certain calculations |

Fraction | Ratio of 2 numbers where denominator is not 0. |

Generate | Come up with or produce |

Histogram | A bar graph showing data in groups/ranges |

Hypotenuse | The longest side of a right triangle; the side opposite the right angle in a right triangle |

Inaccurate | Wrong |

Independent events | Events in which the outcome of the 1st event doesn’t affect the outcome of the 2nd event |

Interior angles | Angles inside a shape |

Irrational number | Number whose decimal form is non-ending and non-repeating |

Irregular figure | A shape where not all sides are equal |

Lateral surface area | Area of all the faces of a 3-dimensional solid except the bases |

Line graph | Graph to show change over time |

Line plot | Diagram showing frequency of data on a number line |

Mean | The sum of a group of numbers divided by the number of numbers, also known as average |

Measures of central tendency | Mean, median, mode |

Median | A value found by ordering a group of data form least to greatest and choosing the middle value of the group |

Mode | In a group of values, the value that occurs most often |

Most accurate representation | The most correct example |

Most reliable results | The most trusted information to come out of an experiment |

Multiples | Numbers that can all be evenly divided by the original number |

Negative number | Number less than 0 |

Net | A flat pattern that can be cut out and folded up to make a 3-dimensional solid |

Nth position | Any position in a sequence |

Nth term | Any term in a sequence |

Origin | The point (0,0) where the x and y axis intersect |

Overall decrease | Value went down over time |

Parallel | Go in exactly the same direction and will never meet |

Percent | The ratio of a number to 100 (per one hundred); the symbol % |

Perimeter | The distance around a figure |

Pi | It has an approximate value of 3.14; symbol is ¶ |

Positive number | Number greater than 0 |

Positive trend | Moving in an upward direction over time |

Potential | The possibility of something happening |

Prism | A 3-dimensional solid figure that has two congruent, parallel polygons as bases and parallelogram sides. |

Procedure | An official way of doing something |

Product | The result of multiplying two or more numbers |

Proportion | An equation stating that two ratios are equal |

Pyramid | A 3-dimensional solid that has triangular faces and a polygon base |

Pythagorean theorem | Formula to find lengths of sides of a right triangle |

Quadrant | One of four regions formed by the intersection of the x and y axes on a coordinate graph. |

Quadrilateral | A polygon that has four sides |

Quotient | The result of dividing one number by another, the solution to a division problem |

Random | Happening by chance |

Range | The difference between the least and greatest values in a set of numbers |

Rational number | A number that can be expressed as a fraction |

Ratio | A comparison of the values of two numbers |

Recognize | To know |

Record | verb: To write down |

Rectangle | A parallelogram with four right angles |

Rectangular | In the shape of a rectangle |

Reduce | To get smaller |

Reflection | A mirror image of a figure shown over a line of reflection |

Region | An area |

Represent | To stand for |

Revenue | Money brought in by a company |

Right angle | An angle measuring 90º |

Rotation | A complete turn |

Rule | A way of determining terms in pattern or sequence |

Salary | A fixed regular amount of money made by an employee |

Sampling methods | Ways to get information about a population (ex. take surveys) |

Scale factor | Ratio between similar figures; how many times larger or smaller a shape is than the original |

Scatter plot | Graph comparing 2 sets of data to see the relationship |

Scientific notation | Way to express very large or small numbers as the product of a number and a power of 10 |

Sequence | A pattern of numbers following an order or rule |

Set | Group of numbers |

Similar | Same shape, different size |

Solid figure | 3-dimensional shape |

Solution | Answer to a problem |

Sphere | 3-dimensional shape like a round ball |

Square unit | A unit of measuring area |

Statistical measure | Mean, median, mode |

Stem and leaf plot | Arrangement of numbers that separate digits into columns |

Strategy | A plan of action to achieve a goal |

Surface area | The area of the outside faces of a 3-dimensional solid |

Survey | A gathering of data or opinions |

Table | An arrangement of data in rows and columns |

Three-dimensional | Having length, width and height |

Top, front, side view | Different perspectives of a 3-dimensional solid |

Total surface area | The area of all the faces of the outside of a 3-dimensional solid |

Transformation | Change the shape, position or size of an object |

Translation | To slide a figure along a straight line |

Trapezoid | A quadrilateral with only one pair of parallel sides |

Trend | The general direction something takes |

Triangle | A 3 sided shape |

Twice | To multiply by 2 |

Two dimensional | A flat shape with only 2 measurements, length and width |

Valid | Makes sense based on the information |

Venn diagram | A diagram used to represent sets and relationships between sets |

Vertex | Corner |

Volume | The amount of space inside a container; how much something could hold |

X-axis | The horizontal number line of a coordinate graph |

X-coordinate | The value of the x-axis used to locate a point on the graph;the first value in an ordered pair |

Y-axis | The vertical number line of a coordinate graph |

Y-coordinate | The value of the y-axis used to locate a point on the graph; the 2nd value in an ordered pair |

Best represents | Best shows or matches |

Unit rate | A ratio that shows the cost per one unit of measure |

Created by:
LMSmath