81 terms

Mean

If all things are equal, everyone will get the same amount.

Permutation

The set of objects in which position, or order, matters.

Sample Space

The set of all possible outcomes.

Impossible Event

An event that is not likely to happen.

Combination

The set of objects in which position, or order, does not matter.

Box Plot

A visual representation of the five number summary.

Normal Curve

A line graph depicting a set of data that are normally distributed; meaning the frequency values are highest in the middle, and the graph is symmetric.

Standard Deviation

The square of the average distance from the mean. Tells how spread out the data is.

Variation

The difference in the numbers of a data set.

Scatter Plot

Used to show the relationship between two data sets.

Probability

A numerical value that represents the degree to which we believe that an event will or will not happen.

Mode

The data value that occurs most often.

Certain Event

An event that is most likely to happen.

Median

The middle data value.

Stem-and-leaf plot

Used to show each value in a data set and to group values into intervals. Allows to pull out the data from the graph.

Histogram

Used to compare numbers of data items grouped in numerical intervals.

Circle Graph

Used to show the division of a whole into parts.

Bar Graph

Used to compare numbers of data items grouped in categories; order does not matter except for convenience.

Line Plot

Used when there is only one group of data with less than 50 values.

Line Graph

Used to show how the data values change over time; normally used for continuous data.

Concurrent Lines

Three or more lines that intersect at a single point.

Alternate interior angles

Two interior angles that have different vertices and are on opposite sides of the traversal.

Cone

A simple, closed surface whose base is a simple, closed curve and whose lateral surface slopes up to a vertex.

Alternate exterior angles

Two exterior angles that have different vertices and are on opposite sides of the traversal.

Dodecahedron

A regular polyhedron made of twelve regular pentagons.

Pyramid

All polyhedral whose base is a polygon and whose faces are triangles that have a common vertex.

Skew Lines

Two lines that do not intersect and do not lie in the same plane.

Substution

If a = b, then we can replace "a" with "b" in any equation.

Trapezoid

A quadrilateral with at least one pair of parallel sides.

Sphere

The set of points equidistance from a given point.

Polyhedron

Simple closed surfaces that are composed of polygonal regions.

Kite

A quadrilateral in which two pairs of adjacent sides are congruent.

n-gon

A polygon with n sides.

Prism

All polyhedral that have two parallel faces that are congruent polygons.

Heptagon

A polygon with seven sides.

nonagon

A polygon with nine sides.

Cylinder

A simple, closed surface that is bounded by two congruent simple closed curves that lie in parallel planes.

Corresponding Angles

Two angles on the same side of the traversal with different vertices, where one is an exterior angle and the other is an interior angle.

Circle

The set of points in a plane that are all the same distance from a given point

Cube

A regular polyhedron made of six squares.

Reflexive Property

a=a

Transitive Property

If a = b and b = c, then a = c.

Icosahedron

A regular polyhedron made of twenty equilateral triangles.

Dodecagon

A polygon with twelve sides.

Rhombus

A quadrilateral in which all sides are congruent.

Octahedron

A regular polyhedron made of eight equilateral triangles.

Rectangle

A quadrilateral in which all angles are congruent.

Decagon

A polygon with ten sides.

Vertical Angles

When two lines intersect, the angles opposite each other.

Complementary Anlges

The sum of the measures of two angles is 90 degrees.

Parallelogram

A quadrilateral in which both pairs of opposite sides are parallel.

Supplementary Anlges

The sum of the measures of two angles is 180 degrees.

Reflex angle

An angle whose measure is greater than 180 degrees and less than 360 degrees.

Square

A quadrilateral in which all four sides are congruent and all four angles are congruent.

Tetrahedron

A regular polyhedron made of four equilateral triangles.

Surface Area

Found by adding the area of all the bases/faces

Volume

Found by multiplying the area of the base by the height of the three dimensional solid.

Perimeter

The sum of lengths of the sides.

Area

Generally deals with "how much" it takes to cover an object.

Median

A line segment that connects a vertex to the midpoint of the opposite side.

Diagonal

A line segment that joins two nonadjacent vertices in a polygon.

Centroid

The intersection of the medians

Midsegment

Line segment connecting two midpoints in a triangle.

Incenter

The intersection of the angle bisectors.

Midpoint

The middle of a line segment.

Angle Bisector

A line segment that bisects an angle.

Perpendicular Bisector

A line segment that goes through the midpoint of a side and is perpendicular to that side.

Altitude

A perpendicular line segment that connects a vertex to a line containing the side opposite that vertex.

Circumcenter

The intersection of the perpendicular bisectors.

Tessellation

A regular repetition of the figure or figures covering a plane so that there are no gaps and no overlapping of figures.

Rotation

A transformation on a plane determined by holding one point fixed and rotation the plane about this point by certain number of degrees in a certain direction.

Scale Factor

The common ratio between the sides of two figures.

Reflection

Copying a figure across a line.

Translation

Moving an object along a straight line and not turning it.

Circumfrence

the distance around a circle

Perpendicular Lines

Two intersecting lines that form a right angle.

scalene triangle

A triangle with with all three sides having different lengths.

Parallel Lines

Two lines in the same plane that never intersect.

Isosceles Triangle

A triangle with at least two sides the same length.

Polygon

A simple closed curve in the plane that is composed only of line segments.

Straight angle

An angle whose measure is 180 degrees.