Download concave (no convex) polygon

denominator
1
4
2
3
3
4
denominator
The number of equal
parts into which the
whole (or ONE or unit) is
divided.
density
A rate that compares
the mass of an object
with its volume.
diagonal
A line of objects
or numbers from
one corner to
another one.
diagonal
A line that separates
the upper left to
lower right or from
the lower left to the
upper right.
diameter
A line segment that
passes through the
center of a circle (or
sphere) and has
endpoint on the circle.
difference
27
-5
22
difference
The amount by which
one number is greater
or less than another.
digit
321
8
76,241
7,890
40
190,234
One of the symbols
0, 1,2,3,4,5,6,7,8, and 9
which can be used to write
any number.
digital
clock
hour
colon
12:35
minutes
A clock that uses
numbers to show the
time in hours and
minutes, with a colon
used to separate them.
dimension
A measure in one
direction, for example,
length and width.
distributive
property
ax (x + y) = (a * x) + (a * y)
multiplication over addition
ax (x – y) = (a * x) – (a * y)
multiplication over subtraction
A property that
relates two operations
on numbers.
dividend
12 ÷ 3 = 4
The total being
shared.
division
It is used to find how
a total amount can be
separated into an equal
number of groups.
division
12 ÷ 3 = 4
A mathematical
operation based on
“sharing” or “separating
into equal parts”.
divisor
12 ÷ 3 = 4
The number of equal
parts or the number
in each equal part.
divisibility test
A test to determine
whether a whole number is
divisible by another whole
number, without actually
doing the division.
dodecahedron
Any polyhedron with
twelve faces.
double fact
4+4=8
2+2=4
3X3=9
1X1=1
The addition or
multiplication facts
without turn-around
partners.
edge
A line segment
where two faces of
a polyhedron meet.
ellipse
A closed, oval, plane figure.
An ellipse is the path of a
point that moves so the sum of
its distance from two fixed
points is constant. Each of
the fixed points is call a focus
of the ellipse.
endpoint
endpoint
ray
T
line segment
S
The point at the
end of a line
segment or ray.
equal-grouping
story
Tom had 10 marbles. Half
of the marbles were green.
How many blue marbles did
he have?
10 ÷ 2 = 5
A number story that
involves separating
something equally.
equal groups
1+3=4
1+5=2+4
=
=11
=2
A set with the
same number
of elements.
equal-sharing
story
Sue has 8 candy bars. She
wants to share them equally
with her sister. How many
bars will each one get?
8 ÷2=4
A number story that
involves sharing
something equally.
equation
2 + 3 = 5
12 ÷ 3 = 4
98 – 24 = 74
8 x 5 = 90 - 50
A mathematical
sentence that states
the quality of two
quantities.
equidistant
marks
Marks equally
distant from one to
the next.
equilateral
triangle
A polygon in which
all sides are the
same length.
equivalent
½, 0.5, 50%
Equal in value, but
in a different
form.
equivalent
equations
2+x=4
6+x=8
Equations that have
the same solution.
equivalent
fractions
Fractions that have
different numerators
and denominators, but
the same number.
equivalent
names
16
10 less than 26
4+4+4+4
20 - 4
(2 X 5) + 6 half of 32
XVI
sixteen
8 twos
llll llll llll l
Different ways of naming
the same number.
equivalent
ratios
Ratios that can be
named by equivalent
fractions.
estimate
57
+22
estimate
60
+20
80
A close, rather
than the exact
number.
estimate
57
+22
estimate
60
+20
80
A calculation of a
close, rather than
exact answer; a
number close to
another number.
even
number
36
200
8
152
12,144
A whole number
that has a
0,2,4,6,8 in the
ones place.
even
number
36
200
8
152
12,144
A whole number that
has a 0,2,4,6,8 in
the ones place and
can be evenly divided
by 2.
event
A happening or
occurrence.
exploration
concept development
games
data collection
manipulative
skill review
problem solving
An independent
or small-group
activity.
exponent
3
4 =4*4*4
The raised number in
a power that tells the
number of times the
base is used as a
factor.
exponential
notation
3
4 =4*4*4
A shorthand way of
representing
repeated
multiplication of the
same factor.
expression
( 2 + 3) X (6 – 2)
5 X (6 – 2)
5X4
A group of mathematical
symbols (numbers,
operations signs, variables,
grouping symbols) that
represents a number ( or
can represent a number if
values are assigned to any
variables it contains).
extended
fact
30 + 70 = 100
40 X 5 = 200
560 ÷ 7 = 80
A variation of a basic
fact involving
multiples of 10, 100
or so on.
face
face
A flat surface that
bounds a
3-dimensional shape.
fact
extensions
5 + 8 = 13
50 + 80 = 130
500 + 800 = 1300
Calculations of
large numbers
using knowledge
of basic facts.
fact family
5 + 6 = 11
6 + 5 = 11
11 – 5 = 6
11 – 6 = 5
5X7=35
7X5=35
35÷7=5
35÷5=7
Related addition
and subtraction or
multiplication and
division facts.
fact family
5 + 6 = 11
6 + 5 = 11
11 – 5 = 6
11 – 6 = 5
5X7=35
7X5=35
35÷7=5
35÷5=7
A group of addition or
multiplication facts
together with the
related subtraction or
division facts.
fact power
The ability to recall
basic numbers facts
without having to
figure them out.
fact table
A chart of rows and
columns for use in
finding +/- or x/÷
facts.
fact tree
A method used to
obtain the prime.
fact
triangle
.
.
12
4
+,-
8
4
12
x,÷
3
Triangular card
labeled with
numbers of a fact
family.
factors
factors
4 X 3 = 12
The numbers being
multiplied in a
multiplication
number model.
factors
(noun)
4, 3, and 2 are factors in
4 x 3 x 2 = 24;
0.5 and 25 are factors in
0.5 x 25 = 12.5
A number that is multiplied
by another number. Factors
may be whole numbers or
rational numbers expressed
as fractions or decimals.
factors
(verb)
Factor 24
6 x 4 = 24 3 x 8 = 24
1 x 24 = 24 2 x 3 x 4 = 24
To represent a
number as a
product of
factors.
factor pair
The factor pairs of 21
are 1 and 21
and 3 and 7.
Two factors of a
number n which whose
product is the number
n.
factor
rainbow
A way of showing
factor pairs in a list
of all the factors of a
number.
factorization
The original number is
represented as a product of
factors, and each of those
factors is represented as a
product of factors, and so on,
until the factor string consists
of prime numbers.
factorial
3! = 3 * 2 * 1 = 6
3! Is read as “three factorial”
A product of a whole
number and all the
smaller whole numbers
except 0.
Fahrenheit
o
32
o
212
boiling
point
freezing
point
Customary system
of temperature
measurement.
Fahrenheit
o
32
o
212
boiling
point
freezing
point
A scale for
temperature
measurement.
flat
surface
A non-curved side
of a 3-dimensional
shape.
flat
Base-10 block
consisting of
100 ones.
flowchart
Enter 4
Multiply
by 5
Add 3
Read
the result
A diagram consisting of
symbols and arrows to
sequentially show a
series of steps to
complete a task.
foot (ft)
A unit of length
equal to 12 inches
or 1/3 of a yard.
formula
A formula for distance traveled
can be written as d = r * t
where the variable d
stands for distance,
r for speed, and t for time.
A general rule for finding
the value of something.
A formula is often
written in abbreviated
form with letters, called
variables.
fraction
A number that shows
part of an object or
group of objects.
fraction
A number in the form or
a/b, where a and b are whole
numbers and b is not 0.
Fractions are used to name
part of a whole object, part
of a whole collection of
objects, to compare two
quantities, or as the quotient
of a divided by b.
Frames and
Arrows
arrow rule
Rule
+5
arrow
+5
5
+5
10
+5
15
20
frame
Diagrams used to represent
number sequences according
to a rule.
frequency
The number of
times a value
occurs in a set of
data.
frequency
graph
A graph showing
how often each
value in a data set
occurs.
frequency
graph
A chart on which data
is tallied to find the
frequency of given
events or values.
frequency
table
A chart on which data is
tallied to find the frequency
of given events or values.
fulcrum
The center support
of a pan balance.
function
machine
in
out
2
5
3
6
4
7
15
18
46
49
A number put in is
changed into a
second number
through the use of
the rule.
function
machine
in
out
2
5
3
6
4
7
15
18
46
49
A diagram of an
imaginary machine
programmed to process
numbers according to a
certain rule.
gallon (gal)
=
A unit of
capacity equal
to 4 quarts.
geometric
solid
A 3-dimensional
shape bounded
by surfaces.
geometry
The study of spatial
objects and their
properties and
relationships.
gram (g)
= gram
= gram
= gram
1000 grams = kilogram
A unit of mass.
greatest
common factor
The common factors 24
and 36 are 1, 2, 3, 4, 6
and 12. The greatest
common factor is
24 and 36 is 12.
The largest factor that
two or more numbers
have in common.
guess
To estimate: judge tentatively
or form an estimate of
(quantities or time); think:
expect, believe, or suppose .
height
How tall
something is.
height of a
parallelogram
One of the sides of a
parallelogram; also the
length of this side.
height of a
rectangle
One of the sides of a
rectangle; also length of
this side. The length of the
side perpendicular to the
base is the height of a
rectangle.
height of
3-dimensional
figure
One face or a pair of faces on
the figure. The height is the
length of a line segment drawn
perpendicular to a base of the
figure that extends from the
base to the opposite face or
vertex.
height of a
triangle
One of the sides of a triangle;
also, the length of its side. The
shortest distance between the
base and the vertex opposite
the base is the height of a
triangle.
heptagon
1
2
7
3
4
6
5
A 7-sided
polygon.
hexagon
1
2
6
5
3
4
A 6-sided
polygon.
hexagram
A star formed by
extending each side
of a regular hexagon
into an equilateral
triangle.
Home Link
A follow-up or
enrichment activity done
at home.
hypotenuse
In a right triangle,
the side opposite
the right angle.
icosahedron
Regular
polyhedron.
image
The reflection of a
picture or object
that you see when
you look through a
transparent mirror.
improper
fraction
A fraction that names a
number greater than or
equal to 1; a fraction
whose numerator is equal
to or greater than its
denominator.
inch (in.)
[
A unit of
measurement
equal to 1/12 of
a foot.
input
A number put
into a function
machine.
inequality
= (not equal)
< (less than)
> (greater than)
< (less than or equal)
> (greater than or equal)
3 < 10; 2 + 5 = 4 + 4
A number sequence
stating that two
quantities are not equal,
or might not be equal.
integer
-2, 2, 6, -100
are examples of integers
Any whole number
or its opposite.
interior
The set of all points of the
plane “inside” a closed 2dimensional figure or a closed
3-dimensional figure. The
interior is usually not
considered to be part of the
figure.
interval
a
a
b
A set of numbers
between two numbers a
and b, possible
a or b.
intersect
To meet (at a
point, line, and so
on).
irrational
numbers
π
11.00100 10000 11111 10110 …
3.14159 26535 89793 23846 26433 83279 50288 …
3.243F6A8885A308D31319…
22⁄7, 223⁄71, 355⁄113, ...
Numbers that cannot be
written as fractions where
both the numerator and
denominator are integers and
the denominator is not 0.