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Unit 6
7th Grade Math Vocabulary
Word, Definition, Model
Emery
UNIT 6
Adjacent
Definition: Placed next to each other, often
adjacent figures share sides.
Model:
UNIT 6
Area
Definition: The amount of space inside the
boundary of a figure.
Model:
UNIT 6
Base
Definition: The part of a figure on which the
figure rests. It is usually the bottom.
Model:
UNIT 6
Circumference
Definition: The distance around the outside
of a circle.
Model:
UNIT 6
Complementary
Definition: Two angles are complementary
when their measures add to 90 degrees.
Model:
UNIT 6
Cross Section
Definition: A view of a slice of something.
The shape when you cut through the middle.
Model:
UNIT 6
Decompose
Definition: To slowly disappear or break
down.
Model:
UNIT 6
Diameter
Definition: The distance across a circle, going
through the center of the circle.
Model:
UNIT 6
Height
Definition: The vertical distance across a
figure.
Model:
UNIT 6
Inscribed
Definition: Drawn on the inside of a figure,
touching as many points as possible.
Model:
UNIT 6
Isosceles
Definition: Having two equal sides. (The third
side is isolated.
Model:
UNIT 6
Net
Definition: A two dimensional representation
of a three dimensional figure. It is made by
“unfolding” the 3d figure.
Model:
UNIT 6
Pi
Definition: The ratio of a circles
circumference to the length of its diameter.
Model:
UNIT 6
Pyramids Face
Definition: An individual surface of an object.
Model:
UNIT 6
Radius
Definition: The distance from the center of a
circle to any point on the outside.
Model:
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Right Rectangular Prism
Definition: A prism where all sides are
rectangles and all corners are 90 degrees.
Model:
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Right triangle
Definition: A triangle with a 90 degree angle.
Model:
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Squares
Definition: A four sided figure with four equal
sides and four 90 degree angles.
Model:
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Supplementary
Definition: Two angles are this if the sum of
their measures is 180.
Model:
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Surface area
Definition: The total area of the outer most
layer of an object.
Model:
UNIT 6
Trapezoid
Definition: A four sided figure with only two
parallel sides.
Model:
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Vertical
Definition: Two angles that are across from
each other. They share no adjacent sides.
Model:
UNIT 6
Vertices
Definition: More than one vertex. The vertex
an intersection of two lines or sides.
Model:
UNIT 6
Volume
Definition: The capacity of an object. The
amount that an object would hold.
Model:
Unit 6: Geometry
Adjacent
Area
Base
Circumference
Complementary
Cross section
Decompose
Diameter
Height
Inscribed
Isosceles
Net
Pi π
Pyramids face
Radius
Right rectangular
prisms
Right triangle
Squares
Supplementary
Surface area
Trapezoid
Vertical
Vertices
Volume