alternative method of listing elements of a set is the list, or ROSTER
METHODof SPECIFICATION.
diagonalAny straight LINE SEGMENTthat joins two nonadjacent or
nonconsecutive vertices on a POLYGON, or two vertices on different
faces on a POLYHEDRON.diameterThe length of a LINE SEGMENTthat dissects the center of a CIRCLE,
with the ends of the line segment at opposite points on the circle.diamondAQUADRILATERALthat has two OBTUSE ANGLEs and two ACUTE
ANGLEs.
See alsoSECTION IV CHARTS AND TABLES.
differenceThe total obtained by subtracting one number or quantity from
another. For example, in 103 – 58 = 45, the total 45 is the difference.
difference of two cubesA formula used to FACTORtwoCUBED BINOMIALs
into twoPOLYNOMIALs of the SUMof the CUBEroots times the
DIFFERENCEof the cube roots, written as x^3 – y^3 = (x–y)(x^3 +xy+y^3 ).
difference of two squaresA formula used to FACTORtwo SQUARED
BINOMIALs into the SUMof the SQUARE ROOTs times the DIFFERENCE
of the square roots, written as x^2 – y^2 = (x+y)(x–y).
dimensionThe measurement of an object or figure, including length, width,
depth, height, mass, and/or time.
directly proportionalThe change in the value of a VARIABLEas it relates to
the change in the value of another variable in a DIRECT VARIATION
FORMULA. For example, in A=πr^2 , the value of the AREAchanges as
a direct result of changes in the value of the RADIUS, so Ais directly
proportional to r^2.
direct variation formulaAny formula in which the value for one VARIABLE
is dependent on the value of another variable. For example, the AREA
of a CIRCLE,A=πr^2. This formula is expressed as y=kxn.
discontinuous graphAnyGRAPHin which the lines of the graph are not one
consecutive, or continuous, line.discrete graphAny GRAPHin which the points are not connected.
Discriminate Theorem ATHEOREMused to determine the number of ROOTs
of a QUADRATIC EQUATION.
See alsoSECTION IV CHARTS AND TABLES.
distance1. Measurement that is equal to rate of speed multiplied by time.- The length between two or more points.
GLOSSARY diagonal – distance
GLOSSARY diagonal – distance
BADiameter
Diamond