Download acute angle acute triangle

Fourth Grade Vocabulary
acute angle
angle whose measure is
greater than 0º and
less than 90º
A
B
C
acute triangle
triangle that has
three acute angles
Cobb County 4th Grade
1
2010-2011
angle
two rays or line segments
that share the same endpoint
area model
33
x 6
198
associative property
grouping numbers in different ways
resulting with the same product or sum
(32 + 48) + 56 = 32 + (48 + 56)
Cobb County 4th Grade
2
2010-2011
commutative property
two or more numbers added or multiplied in
any order resulting in the same sum or
product
36 + 48 + 52 = 36 + 52 + 48
coordinate system
method for locating points using a
plane formed by two intersecting and
perpendicular number lines called axes
cube
rectangular prism with six
square faces
Cobb County 4th Grade
3
2010-2011
cylinder
3-dimensional object with two
parallel circular bases
data
information gathered; facts or figures
from which conclusions are drawn
decimal
3.57
number with one or more
digits to the
3.3cyl
right of the decimal point
inder
Cobb County 4th Grade
4
2010-2011
$5.65
decimal point
3.57
symbol used to separate dollars and cents
in money and the ones place from the
tenths place in decimals
degree
unit used for measuring
angles and temperatures
denominator
3
5
lower number of a fraction which tells how
many parts are in the whole or in the group
Cobb County 4th Grade
5
2010-2011
diagonal line
line segment joining two
non-adjacent vertices of a
polygon
distributive property
25 x 43
(20 x 40) + (20 x 3) + (5 x 40) + (5 x 3)
3 X 8 + 3 X 4 = 3 X (8 + 4)
567
dividend
the number that is to be divided in
a division problem
21 ÷ 7 = 3
Cobb County 4th Grade
6
21 ÷ 7 = 3
2010-2011
divisor
7
the number that divides the dividend
21 ÷ 7 = 3
edges
line segments where two or more faces
of a solid figure meet
equilateral triangle
triangle that has 3 sides equal
in length and 3 angles equal
in size
Cobb County 4th Grade
7
2010-2011
equivalent fraction
two or more fractions that
name the same amount
=
estimate
find out about how many or how
much
36 is about 40
= 1+9
evaluate
= 10
find the value of a
mathematical expression
Cobb County 4th Grade
8
2010-2011
expanded form
way to write numbers by showing
the value of each digit
3000 + 400 + 20 + 7 = 3,427
expression
+ 23 – 14
mathematical phrase (part of the number
sentence) that combines numbers and
operation signs but does not have an
equal sign
(2+4)-5
face
polygons that form flat surfaces
on a solid figure
Cobb County 4th Grade
9
2010-2011
factor
numbers that are multiplied together
to find s
a product
4 X 6 = 24
full rotation
360°movement of a figure around
a fixed point
gram
metric unit for
measuring weight (mass)
Cobb County 4th Grade
10
2010-2011
half rotation
180°movement of a figure
around a fixed point
37.76
hundredths
one hundred equal parts
1
100
improper fraction
fraction in which the numerator
is greater than or equal to
the denominator
Cobb County 4th Grade
11
2010-2011
interpret
give the meaning of
or explain
isosceles triangle
triangle with 2 sides equal in length
and 2 angles equal in size.
kilogram
metric unit for measuring weight
(mass)
Cobb County 4th Grade
12
2010-2011
like denominators
fractions with denominators that
are the same 2
5
6
6
line
straight path of points that has no
beginning or end
line graph
graph that uses a line to
show how data changes
over a period of time
Cobb County 4th Grade
13
2010-2011
line plot
graph that uses symbols above a
number line to represent data
line segment
A
G
part of a line that includes two
endpoints
3
3
4
6
7
Cobb County 4th Grade
median
middle score (or scores)
when a set of scores are
written in order of size
14
2010-2011
million
3,000,000
six places to the left of
the ones place
mixed fraction
4
3
3
3
4
6
7
Cobb County 4th Grade
an amount given
as a whole number
and a fraction
mode
the score that occurs
most
often
in
a
set
3
of scores
15
2010-2011
multiple
number that is the product of a given number
and a whole number
7 X 8 = 56
56 is a multiple of 7 and also 8
net
flat pattern that can be used to
make a three-dimensional object
numerator
the top number of a fraction, which tells
how many parts are being counted out of
the total number of equal parts
Cobb County 4th Grade
16
2010-2011
obtuse angle
angle whose measure
is greater than 90°
and less than 180°
obtuse triangle
triangle that has one
obtuse angle
ordered pair
pair of numbers used to locate
a point on a coordinate grid
(2, 4)
Cobb County 4th Grade
17
2010-2011
ounce
standard unit for
measuring weight
parallel
lines in the same plane
that never intersect and are always the
same distance apart
parallelogram
quadrilateral whose opposite sides are
parallel
Cobb County 4th Grade
18
2010-2011
partial product
38
X 9
54(6X9)
270(30X8)
324
products when the
ones, tens and hundreds
are multiplied separately
perpendicular
two lines or line segments
that intersect to form
right angles
pictograph
graph that uses symbols
to show data
Cobb County 4th Grade
19
Sam
Sue
Key
= 2 cats
2010-2011
place value
value of a digit according to
its place in a number
7,382
the value of 7 = 7,000
plane
flat surface that extends indefinitely in
all directions
plane figure
two-dimensional shape
Cobb County 4th Grade
20
2010-2011
point
an exact location in
space
polygon
closed plane figure formed by three
or more line segments and angles
pound
customary unit of weight
1 lb = 16 oz
Cobb County 4th Grade
21
2010-2011
prism
rectangular
prism
triangular
prism
product
name given to the answer in a
multiplication problem
proper fraction
fraction where the numerator is less than
the denominator
or
Cobb County 4th Grade
22
or
2010-2011
protractor
tool for
measuring the
size of an angle
pyramid
has one base which gives the
pyramid its name, all other faces are
triangles
quotient
28 ÷ 2 = 14
name given to the answer in a
division problem
Cobb County 4th Grade
23
2010-2011
range
difference between the least and
greatest value in a set of data
9
2, 4, 5, 6, 7, 7, 8, 9, 10, 10, 11
ray
line which has a definite starting
point but no end
rectangular prism
solid figure in which all six faces are
rectangles
Cobb County 4th Grade
24
2010-2011
regular polygon
polygon with all sides and
angles congruent
remainder
amount left over when a number cannot
be divided equally
43 ÷ 8 = 5 r 3
rhombus
parallelogram with all four sides
equal in length
Cobb County 4th Grade
25
2010-2011
right angle
angle which forms a square corner;
has a measure of 90°
right triangle
triangle with one 90° angle
rotation
movement of a figure to a new position
by turning it around a vertex or point of
rotation
Cobb County 4th Grade
26
2010-2011
scalene triangle
triangle in which no sides
are equal in length; no angles are
equal in size
solid figure
3-dimensional figure
standard form
352
4,672
way to write numbers using
the digits 0 - 9
Cobb County 4th Grade
27
2010-2011
straight angle
angle that measures 180°
+
= __
symbol
word, picture, or number used
instead of words
tenths
546.6
ten equal parts
Cobb County 4th Grade
28
1
10
2010-2011
ton
customary unit used to measure
weight
1 T = 2,000 lbs
trapezoid
quadrilateral with exactly one
pair of parallel lines
trend
changes in data over time
Cobb County 4th Grade
29
2010-2011
Venn diagram
uses circles to show
relationships among sets
vertex/vertices
point at which 2 or more
straight lines meet
weight
how heavy or light an object
is in numbers
Cobb County 4th Grade
30
2010-2011
x-axis
x
horizontal line in a coordinate system
or on a coordinate plane
y-axis
y
vertical line in a coordinate system
or on a coordinate plane
Cobb County 4th Grade
31
2010-2011