In this article, we share a comprehensive list of math words that start with the letter “R” to enhance your mathematical vocabulary.
- Radius- Distance from the center of a circle to any point on its circumference.
- Range- Difference between the highest and lowest values in a data set.
- Ratio- Relationship between two numbers indicating how many times the first number contains the second.
- Rational Numbers- Numbers that can be expressed as a fraction of two integers.
- Real Numbers- All numbers on the number line, including both rational and irrational numbers.
- Reciprocal- The multiplicative inverse of a number.
- Rectangle- A quadrilateral with four right angles.
- Reflection- A transformation producing a mirror image of a figure.
- Regression- A statistical process for estimating relationships among variables.
- Regular Polygon- A polygon with all sides and angles equal.
- Remainder- The amount left over after division.
- Root- The solution of an equation expressed as an integer, fraction, or other mathematical expression.
- Rhombus- A quadrilateral with all four sides of equal length.
- Right Angle- An angle of 90 degrees.
- Right Triangle- A triangle with one right angle.
- Rotation- A circular movement of an object around a center or point.
- Round- To approximate a number to the nearest whole number, tenth, hundredth, etc.
- Resultant- The vector sum of two or more vectors.
- Repetend- The repeating part of a decimal.
- Residual- The difference between observed and predicted values in a regression analysis.
- Resolution- The smallest measurable interval in a mathematical context.
- Reticence- The quality of being reserved, not typically a mathematical term.
- Reduced- Simplified form of a fraction.
- Radius of Convergence- The radius within which a power series converges.
- Rationalize- To eliminate a radical from the denominator of a fraction.
- Real Part- The non-imaginary part of a complex number.
- Reflex Angle- An angle greater than 180 degrees but less than 360 degrees.
- Row- A horizontal group of values in a matrix or table.
- Rational Function- A function defined by the ratio of two polynomials.
- Rounding Error- The difference between the calculated approximation of a number and its exact mathematical value.
- Rejection Region- The set of values for which a null hypothesis is rejected in statistics.
- Radical- Another term for a root, especially square root.