## Math Vocab2

##### Created by:

rock444m  on May 24, 2011

Pop out
No Messages

# Math Vocab2

 diametera line segment/a special chord that passes through the center & touches 2 points on the circle (twice the length of the radius)
1/66

Order by

#### Photos

diameter
a line segment/a special chord that passes through the center & touches 2 points on the circle (twice the length of the radius)
Any line segment that connects the center of a circle to a point on a circle. 1/2 the length of the diameter.
chord
A line segment that connects two points on the circle
vertex
name for the endpoints of 2 rays that from an angle;
name for the corner in a solid figure where 3 or more edges meet
central angle
An angle whose vertex is the center of the circle
obtuse angle
an angle between 90 and 180 degrees
acute angle
An angle less than 90 degrees
circumference
the distance around a circle (about 3 times the diameter)
In the formula for the circumference of a circle (2πr), the r stands for the ____.
Ratioa comparison of two numbers by division
RateA ratio that compares two quantities measured in different units
Proportionsis an equation that states that two ratios are equal
Polygonsa closed figure, all straight lines, and no intersecting lines
Trianglesany polygon with 3 sides and 3 angles
parallelograma quadrilateral whose opposite sides are both parallel
trapezoida quadrilateral with two parallel sides
squarea plane rectangle with four equal sides and four right angles
Rectanglea parallelogram with four right angles
Rhombusa parallelogram with four equal sides
Vertical anglesa pair of opposite congruent angles formed by intersecting lines
Complementarytwo angles that equal 90
Supplementarysum of angles that equals 180 degrees
Congruentfigures that have the same size and same shape
similarFigures that have the same shape but not necessarily the same size
tree diagrama diagram used to show the total number of possible outcomes
counting principleall possible outcomes (multiply the numbers to find.)
integersAll the whole number negative and positive no fractions or decimals.
whole numbersAll positive integers (including zero)
coefficientnumber in front of a variable
variableA symbol, usually a letter that stands for a number.
expressionthe part of a number sentence that combines numbers and operations, but doesn't have an equal sign.
reciprocalThe inverse of a fraction; when multiplied by the original fraction, it results in a product that equals one
opposite numbera number that is the same distance from 0 on the number line as a given number but on the opposite side of 0. Adding a number and its's opposite alway equal zero.
exponentnumber that represents the number of times the base is used as a factor
commutativethe order in which 2 numbers are added does not change the sum
associativethe grouping can change without changing the value
distributiveindicating separate members of a group, one at a time
identityan equation that is true for every value of the variable
inverse propertyThe operation which undoes an operation - the opposite operation: subtraction is the inverse of addition, addition is the inverse of subtraction etc.
cross productsCross multiply the means and extremes and put them equal to each other
equalityGiven an equation you can add, subtract, multiply, and divide both sides by the same number and the equation is still true.
vertexpoint where two line segments meet to form an angle
sideany one of the line segment that form a polygon
angletwo rays with a common endpoint
baseside or face on which an object lies on
heightthe perpendicular distance from the base to the opposite vertex
perpendicular
intersecting at or forming right angles
right triangle
a triangle with an angle that measures 90 degrees
acute triangle
A triangle with three acute angles
obtuse triangle
a triangle with one obtuse angle
polygona closed plane figure formed by three or more line segments
straight anglean angle of 180 degrees (a straight line)
list 3 kinds of anglesright angle, acute, obtuse
parallel line
lines that will never meet, no matter how long you stretch them (like railroad tracks)
a polygon with four sides
isosceles triangle
a triangle with two equal sides
scalene triangle
a triangle with no sides of equal length
equilateral triangle
a triangle with three equal sides
parallelogramA quadrilateral with two pairs of parallel sides
trapezoida quadrilateral with two parallel sides
rhombusA quadrilateral, all 4 sides the same length
Percent
a ratio that compares a number to 100
line segment
a part of a line with two endpoints
ray
part of a line with one endpoint

#### Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Flickr.com. Click to see the original works with their full license.

This product uses the Flickr API but is not endorsed or certified by Flickr.

### First Time Here?

Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.