Math Flashcards
angle
a geometric figure formed by two rays called sides having a common endpoint called the vertex
Angles are classified by their measures as right angles (exactly 90°); acute angles (less than 90°), and obtuse angles (greater than 90° and less than 180°).
chord
Definition and illustration (if applicable):
a line segment whose endpoints lie on a circle
a diameter is a chord that passes through the center of the circle
circumference
distance around a circle
coordinate plane
a grid formed by two axes that intersect at the origin
The axes divide the coordinate plane into four quadrants. origin–intersection of the horizontal and vertical axes in the coordinate plane described by the ordered pair (0, 0)
denominator
the number of same-size parts in a whole or set
diameter
a chord that passes through the center of a circle
elasped time
the amount of time that passes between two points in time
factor
a number that is multiplied by another number to find a product
frequency
the number of times an outcome occurs
line plot
A line plot shows the spread of data and each piece of data is represented by an x
greatest common factor
the largest number that divides evenly into two or more numbers
interesting lines
lines that meet or cross in exactly one point
kite
a quadrilateral with two pairs of adjacent sides
congruent but not four congruent sides
least common denominator
least common multiple of two or more denominators
least common multiple
the smallest multiple that each of two or more numbers share
likelihood (of an event)
the chance or probability that an event occurs
line graph
a graph using line segments to connect the graphed data points
mean
a measure of central tendency; the arithmetic average; a mathematical representation of the typical value of a series of numbers, computed as the sum of all the numbers in the series divided by the count of all numbers in the series.
Example: Suppose you wanted to know what the arithmetic mean of a stock’s closing price was over the past week. If during the five-day week the stock closed at $14.50, $14.80, $15.20, $15.50, and then $14.00, its arithmetic mean closing price would be equal to the sum of the five numbers ($74.00) divided by five, or $14.80.
median
a measure of central tendency; in a set of ordered data, the middle value
If the data are shown with a histogram the “mode” is simply the value which corresponds to the highest point(s) on the curve.
metric measurement system
a system of measurement based on multiples of 10; basic units are meter (length), gram (mass), and liter (volume or capacity)
mode
a measure of central tendency; the value(s) that occurs most often
numerator
a representation of the number of same-size parts being considered in terms of the whole
ordered pair
Identifies a location in a coordinate plane (i. e., (3, 5))
The first number in the ordered pair indicates the distance of the point from the vertical axis. The second number in the ordered pair indicates the distance of the point from the horizontal axis.
parallel lines
coplanar lines that do not intersect
parallelogram
a quadrilateral with both pairs of opposite sides parallel
perpendicular
lines that intersect to form right angles
place value
the value a digit represents depending on its place in the number
(tenth, hundredth, thousandth)
plane
described as a flat surface that extends infinitely in all directions; has two dimensions
polygon
a two-dimensional, simple, closed geometric figure that has line segments as sides
quadrant
one of four portions into which a plane is divided by the horizontal and vertical axes
radius
a line segment from the center of a circle to any point on the circle
range (of a set of data)
a measure of variation; the difference between the greatest and least values in a data set
rational number
any number that can be written as a ratio (fraction, decimal)
rhombus
a parallelogram with all sides congruent
trapezoid
a quadrilateral with exactly one pair of parallel sides
