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 non-polygon.

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 2-dimensional 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.

0

10

20

30

40

50

60

70

80

90

1stQtr

2ndQtr

3rdQtr

4thQtr

East

West

North

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.

67, 69, 78, 45, 67,

58, 34, 53, 26

Median

• The middle value in a set of data when the data is listed from smallest to largest.

56, 59, 64, 67, 68, 71, 73,

75, 80

Range

• The difference between the minimum and the maximum.

134-56=78