QED stands for the Latin phrase quod erat demonstrandum, which means That which was to be proven. Used at the end of a proof

1 of 4 sections on the Cartesian graph. Quadrant I: (x, y), Quadrant II (-x, y), Quadrant III, (-x, -y), Quadrant IV (x, -y)

The first quadrant on a cartesian graph, located in the upper-right hand side. All points are in the form (x, y).

The second quadrant on a cartesian graph, located in the upper-left hand side. All points are in the form (-x, y).

The third quadrant on a cartesian graph, located in the lower-left hand side. All points are in the form (-x, -y).

The fourth quadrant on a cartesian graph, located in the lower-right hand side. All points are in the form (x, -y).

Polynomials with a maximum term degree as the second degree

Equation with a polynomial with a maximum term degree as the second degree

Inequality with a polynomial with a maximum term degree as the second degree

Polygon with 4 edges/sides and 4 corners/vertices

Multiply by 4

Information that describes something. This is information you can observe

Information given in numbers or values that you can count or measure

amount of something

Unit of liquid volume

A currency unit worth 25 cents

4th degree polynomial equations

1 of 4 equal groups in the distribution of a number set

A question, often associated with a data set from a database

The bottom 20% or the upper 80% of a number set

Multiply by 5

The result of dividing two expressions.

When we divide A by B, Q is the quotient, R is the remainder