A tool used to rule straight lines and measure distances. This ruler is marked in cm (centimeters) along the top and inches along the bottom.
Ruler
-
![]( "Radian")
Radian -
![]( "Radical")
Radical -
![]( "Radicant")
Radicant -
![]( "Radius")
Radius -
![]( "Radius(Polygon)")
Radius(Polygon) -
![]( "Radix")
Radix -
![]( "Random")
Random -
![]( "Random sample")
Random sample -
![]( "Range(statistics)")
Range(statistics) -
![]( "Range of a function")
Range of a function -
![]( "Rate of Return")
Rate of Return -
![]( "Ratio")
Ratio -
![]( "Rational Expression")
Rational Expression -
![]( "Rational Function")
Rational Function -
![]( "Rational Number")
Rational Number -
![]( "Ray")
Ray -
![]( "Real Number")
Real Number -
![]( "Real Numbers")
Real Numbers -
![]( "Reciprocal")
Reciprocal -
![]( "Rectangle")
Rectangle -
![]( "Rectangular Prism")
Rectangular Prism -
![]( "Recurring decimal")
Recurring decimal -
![]( "Recursive")
Recursive -
![]( "Reduce")
Reduce -
![]( "Reflection")
Reflection -
![]( "Reflection symmetry")
Reflection symmetry -
![]( "Reflex angle")
Reflex angle -
![]( "Regular Polygon")
Regular Polygon -
![]( "Regular Polyhedron")
Regular Polyhedron -
![]( "Relative frequency")
Relative frequency -
![]( "Relatively Prime")
Relatively Prime -
![]( "Remainder")
Remainder -
![]( "Rent")
Rent -
![]( "Repeating Decimal")
Repeating Decimal -
![]( "Revolution")
Revolution -
![]( "Rhombus")
Rhombus -
![]( "Right Angle")
Right Angle -
![]( "Right Triangle")
Right Triangle -
![]( "Rigid")
Rigid -
![]( "Rise")
Rise -
![]( "Risk")
Risk -
![]( "Risk management")
Risk management -
![]( "Roman numerals")
Roman numerals -
![]( "Root")
Root -
![]( "Rotation")
Rotation -
![]( "Rotational Symmetry")
Rotational Symmetry -
![]( "Rounding")
Rounding -
![]( "Row")
Row -
![]( "Rule of 72")
Rule of 72 -
![]( "Ruler")
Ruler -
![]( "Run")
Run
