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By: Emily
Spoden
Trapezoid
• I’m a quadrangle that
always has one pair of
parallel lines.
Rectangle
• I’m a parallelogram with four
right angles.
• I always have four sides and
have two pairs of parallel lines.
Pentagon
• I am a polygon with 5
sides.
Octagon
• I am a polygon with 8
sides.
Regular Polygons
• I am a polygon whose sides
are all the same length and
angles are all equal.
Rhombus
• A quadrangle whose sides
are all the same length.
Ellipse
• A circle with two focal
points. All ellipses are ovals
but not all ovals are
ellipses.
Oval
• An egg-shaped curved nonpolygon.
Quadrangle (Quadrilateral)
• I am a polygon that has four
sides.
Parallelogram
• I am a quadrilateral with two
pairs of parallel lines. My
opposite sides are congruent.
Scalene Triangle
• I am a triangle with sides
that are all different
lengths. None of my angles
are the same measure.
Right Angle
• A 90° angle.
Isosceles Triangle
• I am a triangle with at least two
sides that are sides that are the
same length. At least two of my
angles have the same length.
Equilateral Triangle
• I am a triangle with all the same
size sides and all my angles are
the same measure.
Geometric Solids
• A 3-D shape, such as a prism,
cylinder, cone, or sphere. It has
a hollow inside despite its
name.
Polyhedrons
• I am a 3-D figure whose
surfaces, or faces, are all formed
by polygons and their interiors.
Cylinder
• I am a 3-D shape with circular
bases that are parallel and
congruent and my side is
rounded. I am shaped like a can.
Sphere
• I am a 3-D circle.
Cone
• I am a 3-D shape that has a
circular base, curved surface
and one vertex, called the apex.
Prism
• I am a 3-D solid that has two
parallel faces that are congruent
polygons and all other faces are
parallelograms.
Pyramid
• I am a solid in which one face is
any polygon and all the other
faces are triangles that come
together at a point called an
apex.
Cube
• I am a polyhedron with six
square faces. I have eight
vertices and twelve edges.
Circle
• A set of points that is all the
same distance from the center.
Diameter
• A line segment that passes
through the center of a circle or
sphere. It is twice the length of
the radius.
Circumference
• The distance around a circle or
sphere; the perimeter of a circle.
Radius
• A line segment from the center
of a circle or sphere to any point
on the circle or sphere.
Parallel lines
• Lines that never meet and the
same distance apart. Parallel
lines can be line segments, rays
and lines.
Perpendicular Lines
• Two lines meeting at a right
angles. Limes, rays, line
segments can be perpendicular.
Intersecting Lines
• Meeting or crossing one
another. Lines, line segments
and rays can intersect.
Line of Symmetry
• A line drawn through a figure
that divides it into parts that
look EXACTLY the same but
facing opposite directions.
Perimeter
• The distance around a 2dimensional figure.
Area
• The amount of space inside a
closed boundary. It is measured
in square inches or centimeters.
Congruent Shapes
• Having exactly the same shape
and size.
Similar Shapes
• Having the exact same shape
but not necessarily the same
size.
Degree
• A unit of measure for angles
based on dividing a circle into
360 equal parts. ° Is used to
represent degree.
180°
Acute Angle
• An acute angle is an angle that is
greater than 0° but less than
90°.
Obtuse Angle
• An obtuse angle is an angle that
is greater than 90° but less than
180°.
Straight Angle
• An angle that
measures 180°.
90° Angle
• A right angle.
Reflex Angles
• An angle that is greater than
180° and less than 360°.
Adjacent Angles
• Angles that are next to each
other; they have a common
side, but no other overlap. They
share a vertex.
Vertical Angles
(opposite angles)
• When two lines intersect, the
angles that do not share a
common side. Vertical angles
have equal measures. They are
opposite from each other.
Supplementary Angles
• Two angles whose measures
equal 180°.
Bar Graph
• A graph that uses horizontal or
vertical bars to represent data.
90
80
70
60
50
East
West
North
40
30
20
10
0
1st 2nd 3rd 4th
Qtr Qtr Qtr Qtr
Mean
• The sum of a set of numbers
divided by the number of
numbers in the set. The mean is
often referred to as the average.
45+47+52+55+58+60+69=455
455/7=60
60 is the mean.
Maximum
• The greatest number in a set
of data.
12, 15, 21, 26, 30,
32, 34
Minimum
• The smallest number in a set of
data.
47, 45, 34, 58, 56, 67, 90,
78,
Mode
• The value or values that occur
most often in a set of data.
Median
• The middle value in a set of data
when the data is listed from
smallest to largest.
Range
• The difference between the
minimum and the maximum.
134-56=78