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PSSA Words
Words needed by 7th grade students
21
Mathematics
7th Grade
01/18/2010

Additional Mathematics Flashcards

 


 

Cards

Term
area
Definition
number of square units enclosed by a polygon
Term
perimeter
Definition
the distance around a figure
Term
A = ½ bh
Definition
The area of a triangle
Term
A = h÷2( a + b )
Definition
Area of a trapezoid
Term

A = ∏ r2

 

Definition
Area of a circle
Term
S = 180°( n - 2 )
Definition
Total degrees in any polygon
Term
origin
Definition
where the two axes from a coordinate plane meet
Term
circumference
Definition
distance around a circle
Term
median
Definition
the middle number number in a set of data
Term
mode
Definition
the number that occurs most in a set of data
Term
complementary angles
Definition
two angles whose sum is 90 degrees
Term
supplementary angles
Definition
two angles whose sum is 180 degrees
Term
mean
Definition
average - sum of the data divided by how many data points there are
Term
quadrants
Definition
the four regions of a coordinate plane that are separated by the axes
Term
range
Definition
difference between the greatest and least numbers in a data set
Term
similar
Definition
have the same shape but not necessarily the same size
Term
chord
Definition
a line segment whose endpoints are on a circle
Term
congruent
Definition
of the same size and shape
Term
radius
Definition
a line segment with one endpoint at the center of the circle, the otherv at the center
Term
diameter
Definition
a chord passing through the center of a circle
Term
ratio
Definition
a comparison of two numbers
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