SUBJECT INDEX
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
r
Radians
Angle definition and properties (Trigonometry) Degrees as a unit of angle measure Radian - math word definition
Radical
Root (of a number) - math word definition Radical - math word definition Radical sign or symbol - math word definition
Radical sign
Radical sign or symbol - math word definition
Radicand
Root (of a number) - math word definition Radical - math word definition Radical sign or symbol - math word definition Radicand - math word definition
Radius
Radius of a Regular Polygon Circumcircle of a Regular Polygon Parts of a circle - Pictorial index Semicircle - math word definition Radius of an Arc or Arch with calculator - Math Open Reference Radius of a circle definition and calculator Circumference (perimeter) of a circle with calculator Derivation of the arc radius formula
Range
Range of a function Function
Rate
Calculus - Related Rates - a melting snowball
Ratio
Calculus - Ratio Test Ratio - math word definition
Rational number
Rational Number - math word definition Number Irrational number - math word definition
Rationale
The fundamental rationale behind Math Open Reference
Ray
Ray definition (Coordinate Geometry) Ray - math word definition Opposite Rays Definition
Real number
Complex numbers - animated definition Real-number Number Imaginary-number
Reciprocal
Reciprocal - math word definition
Rectangle
Rectangle and its properties. (Coordinate Geometry) Perimeter of a rectangle with calculator- Math Open Reference Rectangles and International paper sizes The Golden Rectangle - math word definition Diagonals of a rectangle with calculator Rectangle - math word definition with calculator Area and perimeter of a rectangle. (Coordinate Geometry) Circumscribed rectangle, bounding box. (Coordinate Geometry) Area of a rectangle with calculator. Definition and formula
Reference angle
Reference angle
Reflect
Reflection - a mirror image of a line segment Reflection - a mirror image of a point Reflection - math word definition Reflected Congruent Triangles
Reflex angle
Reflex Angle definition
Regular
Regular polygon area formula Regular Polygon - math word definition
Remainder
Remainder - math word definition Prime number - math word definition
Revolution
Calculus - Volumes of Revolution
Rhombus
Rhombus - math word definition How to construct (draw) a parallel through a point with compass and straightedge or ruler (rhombus method) Rhombus area formula with calculator Rhombus diagonals bisect each other at right angles Perimeter of a rhombus
Riemann
Calculus - Midpoint and Trapezoidal Riemann Sums Calculus - Riemann Sums
Riemann sum
Calculus - Riemann Sums Calculus - Midpoint and Trapezoidal Riemann Sums
Right
Right triangle definition Oblique versus right pyramid - Math Open Reference Pythagorean Theorem - math word definition Oblique versus right cone - Math Open Reference Right Angle - math word definition
Right angle
Perpendicular - math word definition How to construct a 90 degree angle with compass and straightedge or ruler
Root
Root (of a polynomial) - math word definition Root (of a number) - math word definition Radical sign or symbol - math word definition Radical - math word definition Radicand - math word definition Root - math word definition
Rotate
Rotated Congruent Triangles Rotation - math word definition
Rounding
Integer
Ruler
List of construction worksheets Construction Constructions Introduction. Drawing shapes with compasses and straightedge