Topic 11
Name
Vocabulary Cards
polygon
polygon
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A closed figure made up
of line segments.
side
side
A line segment that forms
part of a polygon.
vertex of a polygon
vertex of a polygon
The point where two sides
of a polygon meet.
Vertex
Topic 11 1 of 6
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Name
diagonal
A line segment that
connects two vertices
of a polygon that are not
next to each other.
diagonal
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triangle
triangle
A polygon with
three sides.
quadrilateral
quadrilateral
Topic 11 2 of 6
A polygon with four sides.
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Name
pentagon
A polygon with five sides.
pentagon
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hexagon
A polygon with six sides.
hexagon
octagon
A polygon with
eight sides.
octagon
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Name
decagon
A polygon with
ten sides.
decagon
parallel sides
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parallel sides
Sides that never cross.
right angle
An angle that makes a
square corner.
right angle
Topic 11 4 of 6
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Name
trapezoid
A quadrilateral with exactly
one pair of parallel sides.
trapezoid
parallelogram
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parallelogram
A quadrilateral with
two pairs of parallel sides.
rectangle
A special parallelogram
with four right angles.
rectangle
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Name
rhombus
A special parallelogram
in which all sides are the
same length.
rhombus
square
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square
Topic 11 6 of 6
A special parallelogram
with four right angles and
all sides the same length.
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