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# Math Vocab

 Line SegmentPart of a line with 2 distinct endpoints
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#### Definitions

Line Segment Part of a line with 2 distinct endpoints
Line A ___ goes on in both directions forever
Radius Line Segment that joins the center of the circle with any point on the edge of the circle
Odd Numbers not easily divisible by 2
360 Number of Degrees in a Circle
Perpendicular Lines that meet at a right angle
Even Numbers easily divisible by 2
Diameter Line segment that joins two opposite points on the circumference through the center; twice the radius
Isosceles Triangle Two equal sides and two equal angles
Ray Part of a line that starts at a distinct point and goes in the other direction without end
Mode The number that appears most often in a set
Median The middle number or average of the two middle numbers of an ordered set
Congruent Having the same shape and size; corresponding sides and angles are equal in these figures
A = pie r 2 Area of a Circle Formula
C = 2 pie r Circumference of a Circle Formula
Mean Average
Bisect To cut into 2 equal halves
y2 - y1/ y2 -y1 Slope formula
(x1 + x2/ 2, y1+y2/2) Midpoint formula
d = square root{ (x1-x2)2 + (y1-y2)2} distance formula
a2 + b2 = c2 Pythagorean theorem
First Outer Inner Last FOIL
Roots of An Equation the solutions to the equation
digits 0-9
tangent A line that touches the circle at exactly 1 point and is perpendicular to the radius
positive Any number greater than zero
y = mx + b Formula of a line
y-intercept "b" in the equation of a line; the point where a give line crosses the y-axis
negative any number less than zero
multiple a number that can be divided by another number with no remainder
remainder what is left over after division, expressed as an integer
quotient the result of division
factor any integer that divides with no remainder into another integer
PEMDAS Order of operations
Product Multiplication
Difference Subtraction

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