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Bridges in Mathematics Grade 2 Home Connections Vocabulary page 1 of 4
Word Definition Examples
the total number of square
area 3 cm
units covered by a 2-D shape
2 cm
2 cm x 3 cm = 6 cm 2
The area of this rectangle is 6 square
centimeters.
a quality or feature The two pairs of equal sides are attributes
attribute
of this rectangle.
1 meter = 100 centimeters
centimeter
2.54 centimeters = 1 inch
distance around a circle,
circumference
sphere, or cylinder
a vertical field in a chart, table,
column
or graph
the vertical or horizontal
coordinate
position of a point on a grid 4
(Together the coordinates 3
show the exact location of the 2
point.) 1 (B,3)
A B C D
the point where the sides of a
corner
shape meet
a 3-D shape with 6 square
cube
faces
a 3-D shape with 2 circular
cylinder
faces of the same size
one in a series of values or
denomination
sizes
1¢ 5¢ 10¢ 25¢
2 4 7
hundreds tens ones
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Bridges in Mathematics Grade 2 Home Connections Vocabulary page 2 of 4
the answer to a subtraction
difference
problem; the result of
subtracting one number from 8–3=5
another; the amount by which
one number is greater than
another
having sides that are all the
equilateral
same length
a triangle whose sides are all
equilateral
the same length
triangle
a flat surface on a 3-D shape
face
a reflection of a shape
flip
1 foot = 12 inches
foot
3 feet = 1 yard
a 2-D shape with 6 sides
hexagon
(The sides can all be the same
length or different lengths.)
12 inches = 1 foot
inch
1 inch = 2.54 centimeters
a triangle with exactly 2 equal
isosceles triangle
sides
1 kilometer = 1,000 meters
kilometer
1 kilometer = 0.62 miles
1 meter = 100 centimeters
meter
1,000 meters = 1 kilometer
an equation or inequality 3+4=7
number sentence
5–3=2
4+5>8
a 2-D shape with 8 sides
octagon
(The sides can all be the same
length or different lengths.)
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Bridges in Mathematics Grade 2 Home Connections Vocabulary page 3 of 4
16 ounces = 1 pound
ounce
(An ounce is a measure of
weight. A fluid ounce is a
measure of volume. There are
8 fluid ounces in a cup.)
always the same distance
parallel
apart
a 2-D shape with 2 pairs of
parallelogram
parallel sides
a 2-D shape with 5 sides (The
pentagon
sides can all be the same
length or different lengths.)
the value of a digit as
place value
determined by its location
relative to the other digits in
the number
853
The value of the 5 is 50, because it is in
the tens place.
1 pound = 16 ounces
pound
(A regular box of butter weighs
a pound.)
a 2-D shape with 4 sides
quadrilateral
a 2-D shape with 4 sides and 4
rectangle
right angles
(A square is a rectangle with 4
equal sides.)
a 3-D shape with 6 faces that
rectangular prism
are all rectangles
(A cube is a rectangular prism
with 6 faces that are all
squares.)
property of a shape that can
reflective
be folded in half so that the
symmetry
two halves are mirror images
of each other
This shape has reflective symmetry
because its two halves are mirror images
of each other. If you folded it on the dotted
line, the halves would match exactly.
forming into a new group, as
regrouping
when five pennies are traded
for a nickel or when 10 ones 1
are traded for a ten 36
+ 19
55
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Bridges in Mathematics Grade 2 Home Connections Vocabulary page 4 of 4
a 2-D shape with 4 equal sides
rhombus
(A square is a rhombus with 4
right angles.)
an angle that measures
right angle
exactly 90 degrees
a triangle with one right angle
right triangle
a triangle with no equal sides
scalene triangle
movement of a shape along a
slide
straight path
a ball shape in which every
sphere
point on the outside is the
same distance from the center
(An egg shape is not a
sphere.)
the result of adding 2 or more
sum
numbers; the answer to an 3+1=4 3 + 3 + 7 = 13
addition problem
A shape is symmetrical if you
symmetrical
can fold it down the middle so
(symmetry) that the two halves match
exactly.
a 2-D, 4-sided shape with only
trapezoid
1 pair of parallel sides (Parallel
means they would never cross
even if they went on forever.)
a 2-D shape with 3 sides
triangle
a 3-D shape with 2 faces that
triangular prism
are triangles and 3 faces that
are rectangles
rotation of a shape around a
turn
point
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