DENOMINATOR

The part of a fraction that tells how many equal parts are in one whole. The denominator is the BOTTOM number in a fraction. For example ⅔, the denominator is 3. There are 3 parts in one whole.

ACUTE ANGLE

An angle that measures less than 90°.

OBTUSE ANGLE

An angle that measures more than 90° but less than 180°.

REFLEX ANGLE

An angle that measures more than 180° and less than 360°.

ANGLE

Forms when 2 lines meet creating a vertex.

RIGHT ANGLE

An angle that measures exactly 90° and usually indicated by a small square in the angle.

STRAIGHT ANGLE

An angle that measures exactly 180°. It is a straight line.

VARIABLE

A letter that is used to represent a # in an equation or an expression.

3b=12(eq) 4x – 2(ex)

CONSTANT

In Algebra, a number on its own - a fixed number.

2t + 5

(5 is constantly a pain in the butt and is in a time out and can't play with anyone else)

NUMERICAL COEFFICIENT

A number used to multiply a variable.

4n-2

4 is the term we are describing because it's madly in love with the variable. He's always attached to the variable...ALWAYS!

X AXIS

The line on a graph that runs horizontally (left-right) through zero.

OPERATION

A mathematical process.

The most common are add, subtract, multiply and divide (+, -, ×, ÷ ).

Y AXIS

The line on a graph that runs vertically (up-down) through zero.

ORDERED PAIR

Two numbers written in a certain order in parentheses like this: (4,5) or (x,y).
Used to show the position on a graph, where the "x" (horizontal) value is first, and the "y" (vertical) value is second.
Here the point (12,5)

is 12 units to the right, and 5 units up.

EQUIVALENT

Having the same value.

$1 = 100¢
120 seconds = 2 minutes

5n = 20

COMMON MULTIPLE

A number that is a multiple of 2 or more numbers.

6 is a common multiple of 2 and 3

PRIME NUMBER

A number can be divided evenly only by 1 or itself
2, 3, 5, 7, 9, etc…

COMPOSITE NUMBER

A whole number that can be divided evenly by numbers other than 1 or itself. 9=1x9, 3x3

COMMON FACTOR

A number that is a factor of the given numbers: 3 is a common factor of 15, 9 and 21.

ORDER OF OPERATIONS

The rules of which calculation comes first in an expression. BEDMAS

INTEGER

A number that is either positive (+) or negative ( - ).

-23, -1, 5, 10, 97. The larger the NEGATIVE number the smaller it is. The larger the POSITIVE number, the bigger the number is.

POSITIVE INTEGER

Zero is neither negative nor positive.)
5 is positive five and it is found to the RIGHT of ZERO on the number line.

NEGATIVE INTEGER

Less than zero and written with a minus sign in front of it: -5 is negative five and it is found to the LEFT of ZERO on the number line.

ZERO PAIR

A pair of number with a positive and negative sign whose sum is zero. (+,-) For example: +2 and -2 .

OPPOSITE INTEGER

For each + integer, there is a - integer, and these integers are called opposites. For example, -3 is the opposite of 3.

EXPANDED FORM

Writing a number to show the value of each digit.
It is shown as a sum of each digit multiplied by its matching place value (units, tens, hundreds, etc.)

23 456 = 20000 + 3000 + 400 + 50 +6

STANDARD FORM

A general term meaning "written down in the way most commonly accepted" usually in numbers. For example: 56 347.

DEGREE

A measure for angles. There are 360 degrees in a full rotation (a circle). The symbol for degrees is °. Example: 90 degrees (90°) is a right angle.

TRIANGLE

The sum of the interior angles of every triangle is equal to 180°.

QUADRILATERAL

The sum of the interior angles of a quadrilateral is equal to 360°.

ISOSCELES TRIANGLE

A triangle with two = sides, two = angles, and one = line of symmetry. The angles opposite the equal sides are also equal.

SCALENE TRIANGLE

A triangle with all s ides and all angles of different lengths and degrees. There is no line of symmetry either.

RIGHT TRIANGLE

A triangle that has a right angle (90°).

OBTUSE TRIANGLE

A triangle that has ONE angle greater than 90°.

PERIMETER

The distance around a two-dimensional shape.
Example: it is the total OUTSIDE of a shape (add up every side).

IRREGULAR POLYGON

A polygon that does not have all sides equal and all angles equal. Even if ONE side is different, it is one of these.

REGULAR POLYGON

A shape where ALL angles and ALL sides are equal.

TRANSLATION

Moving a shape, without rotating or flipping it.

"Sliding". The shape still looks exactly the same, the shape is just in a different place.

ROTATION

A circular movement.
There is a central point that stays fixed and everything else moves around that point in a circle. In other words, stick a NAIL in one corner and spin.

REFLECTION

An image or shape as it would be seen in a mirror.

CONTINUOUS DATA

Data that can take any value (within a range)
Example: People's heights could be any value (within the range of human heights), not just certain fixed heights.

DISCRETE DATA

Data that can only take certain values.
For example: the number of students in a class (you can't have half a student).

PROBABILITY

Probability is the chance that something will happen - how likely it is that some event will happen.

THEORETICAL PROBABILITY

The likelihood that an outcome will happen.

In grade 6 terms, this is what is SUPPOSED to happen.

EXPERIMENTAL PROBABILITY

The likelihood that something occurs based on the RESULTS of the experiment. In grade 6 terms, this is EXACTLY what happens when you actually DO the experiment.