All Triangles=18

0 degrees

Right Triangle

One angle is 90 (a right angle)

Right Triangle

One angle is 90 (a right angle)

Scalene

No sides or angles are Equal

Scalene

No sides or angles are Equal

Triangles

Isosceles

2 sides and angles are Equal

Isosceles

2 sides and angles are Equal

Equilateral

All sides and angles are Equal

Equilateral

All sides and angles are Equal

Triangles

Acute Angle

An angle LESS than 90 degrees

An angle Greater than 90 degrees.

Obtuse Angle

Right Angle

An angle that is

EXACTLY 90 degrees

Two angles whose measures have a sum of 180°

                                                                     

Supplementary Angles

Two angles whose measures have a sum of 90°

                                                                            

Complimentary Angles

Two lines that intersect to form four right angles

                                            

Perpendicular Lines

Intersecting LinesTwo lines that cross at one point

NEVER MEET

Dia

met

er

Radius

Diameter: A line segment that passes through the circle and has endpoints on the circle

Radius: A line segment with one endpoint at the center of the circle and the other endpoint on the circle

Place Value Chart

.50

50%

1

2

.75

75%

3

4

.25

25%

1

4

Percents, Decimals, and Fractions

Similar Figures: Figures with same shape, but NOT same size.

Congruent Figures: Figures with the same size and shape

A line that divides a

shapeEXACTLY in

half.

Line of Symmetry

A polygon with four sides

                                                  

A closed plane figure formed by three or more line segments.

                                                

Polygon

A solid figure that has the shape of a round ball. All pointsare the same distance from the center

                                                      

Perimeter: The distance around a figure (add up all the sides)

23

Numerator (TOP NUMBER)

Denominator(BOTTOM NUMBER)

The smallest number, other than zero, that is a common multiple of two or

more numbers

Example:

multiples of 6: 6, 12, 18, 24, 30, 36

multiples of 9: 9, 18, 27, 36, 45, 54

The LCM of 6 and 9 is 18

The greatest factor that two or more numbers have in common

Example:

18: 1, 2, 3, 6, 9, 18

30: 1, 2, 3, 5, 6, 10, 15, 30

6 is the GCF of 18 and 30

Commutative Property The property that states that when the order of addends or

factors is changed, the sum or product is the same

Examples:

9 + 4 = 4 + 9

6 x 3 = 3 x 6

Associative Property The property that states that the way addends are grouped

or factors are grouped does not change the sum or the product

Examples:

12 + (5 + 9) = (12 + 5) + 9

(9 x 8) x 3 = 9 x (8 x 3)

AddAltogetherPlusSumTotalIncreaseMore than

SubtractMinusDifference DecreaseLess thanHave leftFewer How many more

MultiplyTimesProduct ofOfTwice ( 2 )

DivideQuotient ofHow oftenPerHow much for each?

Words That Mean…

Parentheses ( )Exponents x2

Multiplication X and Division ÷Addition + and Subtraction -

Please Excuse My Dear Aunt Sally

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73,79. 83, 89, 97, 101, 103, 107, 109, 113