HOME MATH DICTIONARY DOWNLOAD FEEDBACK DISCLAIMER Math Dictionary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Radian Measure Radius Random Range of a Function Range of Statistical Data Range of Values Rete of Change Ratio Rational Number Real Number Reciprocal Rectangle Rectangle Number Rectangular Prism Recurring Decimal Reduce to Simplest Form Reflection Region Regular Polygon Regular Polyhedron Relationship Relative Frequency Remainder Resultant Vector Rhombus Right Angle Right Angled Triangle Right Cone or Pyramid Roman Numerals Root of Equation Rotation Rotational Symmetry Rounding Rounding Error Route Matrix Row and Column