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# Math Vocabulary

### WES math vocabulary 2018

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

an angle that is less than 90 degrees | acute angle |

an angle that is more than 90 degrees and less than 180 degrees | obtuse angle |

what we measure angles in | degrees |

an angle with a measure of less than 90 degrees | acute angle |

an angle with a measure greater than 90 degrees and less than 180 degrees | obtuse angle |

a number that has more than two factors | composite |

1) a regular solid with six square faces | cube |

a graph that uses a line to show how data change over time | line graph |

a number found by dividing the sum of two or more addends by the number of addends, often referred to as the average | mean |

when one half of an image is the mirror image of the other half | symmetry |

the value of a digit three places to the right of the decimal | thousandths |

a triangle with all sides the same length | equilateral triangle |

a triangle that has at least 2 congruent sides | isosceles triangle |

a triangle whose largest angle measures greater than 90 degrees | obtuse triangle |

a triangle that has one 90 degree angle | right triangle |

a triangle that has no congruent sides | scalene triangle |

the number of cubic units it takes to fill a solid | volume |

a whole number greater than 1 that has exactly 2 factors, 1 and itself. | prime number |

any whole number greater than one that has more than 2 factors. | composite number |

the greatest of the common factors of two or more numbers. | greatest common factor (GCF) |

Number that cannot be divided by 2. | Odd Number |

Number that is divisable by 2. | Even Number |

The chance that a particular outcome will occur. | Probability |

Having the same shape and size | congruent |

Lines that intersect at right angles to eachother. | Perpendicular |

Lines that are the same distance apart. | Parallel |

When one half of an object is a mirror image of the other half. | Symmetry |

an exact location in space | point |

an endless collection of points along a straight path | line |

part of a line that has two endpoints | line segment |

part of a line that has one endpoint and extends endlessly in the other direction | ray |

lines that cross at one point | intersecting lines |

lines in the same plane that never intersect | parallel lines |

two lines that intersect at right angles | perpendicular lines |

a closed figure made up or three or more line segments | polygon |

has three sides and three angles | triangle |

has four sides and four angles | quadrilateral |

has five sides and five angles | pentagon |

has six sides and six angles | hexagon |

has eight sides and eight angles | octagon |

a triangle with all sides and angles equal | equilateral triangle |

a triangle that has no congruent (equal) sides | scalene triangle |

a triangle where two sides are the same length | isosceles triangle |

value of a digit one place to the right of the decimal | tenths |

not likely to happen | unlikely |

To reduce a fraction is to put it in what? | Simplest Form |

Another word for equal fractions is what? | Equivalent Fractions |

When adding or subtracting decimals, what do you do with the decimals? | Line them up |

When multiplying decimals what do you do with the decimals? | Count the spaces that are right of the decimal |

When dividing decimals what do you do with the decimal? | Bring it straight up |

When given a set of numbers you find this when you subtract the smallest number from the largest. | Range |

To find the average is to also find the what? | Mean |

The number that occurs most often in a set of numbers is the what? | Mode |

What is the name of a fraction whose numerator is larger than the denominator? | Improper Fraction |

What is the name of the number above the fraction bar? | Numerator |

What is the name of the number below the fraction bar? | Denominator |

What is the name of an angle that measures less than 90 degrees? | Acute Angle |

What is the name of an angle that measures greater than 90 degrees? | Obtuse Angle |

What is the name of an angle that measures 90 degrees? | Right Angle |

What is the name of an angle that measures 180 degrees? | Straight Angle |

What math tool do you use to measure the degrees in an angle? | Protractor |

A shape that has six sides is called what? | Hexagon |

A shape that has eight sides is called what? | Octagon |

This type of graph often shows changes over time | Line Graph |

On a stem and leaf plot digits in the ones place are known as the what? | Leaves |

An exact location in space is known as what? | Point |

Part of a line that has one endpoint and extends endlessly in one directions is what? | Ray |

Lines that meet at one point are known as what? | Intersecting Lines |

Lines that never cross are known as what? | Parallel Lines |

What is formed when two rays have the same endpoint? | Angle |

Angles are measured in what? | Degrees |

A shape that has three sides is called what? | Triangle |

What is a closed figure made up of three or more line segments called? | Polygon |

What is the name for a triangle that all the sides are the same length? | Equilateral Triangle |

What do you call a rectangle with all sides the same length? | Square |

What is the name for a quadrilateral with only one pair of parallel lines? | Trapezoid |

A what moves a figure up, down, or over? ** slide ** | Translation |

A what produces a mirror image of figure? ** flip ** | Reflection |

A what rotates a figure around a point? ** turn ** | Rotation |

Three feet equals how many inches? | 36 |

Four quarts is equal to how many gallons? | 1 |

One ton equals how many pounds? | 2,000 |

A pentagon has how many sides? | 5 |

Part of a line having two endpoints is called what? | Line Segment |

Two lines that meet at right angles are: | perpendicular |

What is another term for average or mean? | fair share |

The MOD is the number that occurs __________ ________. | most often |

How do you find the RANGE? | Subtract the smallest number from the biggest one. |

What is the clue for MODE? | MOOOOOOOST |

What is the clue for MEDIAN? | The MEDIAN in the road is in the middle. |

What is the median in this data set? 8, 15, 21, 25, 33 | 21 |

When you're asked to find the average, which one are they asking for? | MEAN |

an exact location in space | Point |

an exact location in space | point |

an endless collection of points along a straight path | line |

part of a line that has two endpoints | line segment |

part of a line that has one endpoint and extends endlessly in the other direction | ray |

an angle that measures exactly 90 degrees | right angle |

an angle that measures exactly 180 degrees | straight angle |

an event that will definitely happen, an event with a probability of 1 | certain |

a dot separating the ones and tenths places in a decimal number | decimal |

a polygon with six sides | hexagon |

the value of a digit two places to the right of the decimal | hundredths |

an event with a no chance of occuring has a probability of | zero |

when numbers are arranged from least to greatest, the middle number of a set of numbers, or the mean of two middle numbers when the set has two middle numbers | median |

the number that appears most frequently in a set of numbers (there may be one, more than one, or none present) | mode |

an eight sided polygon | octagon |

a polygon with five sides | pentagon |

a closed plane figure formed from line segments that meet only at their endpoints | polygon |

the result of division | quotient |

in whole number division, when you have divided as far as you can without using decimals, what has not yet been divided | remainder |

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