**Math Words That Start With R – Learning Drives – **Words That Start With RRadius, Ratio, Ray

Our Math Dictionary word list which begin with R includes the Math terms that begin by the letters R.

Start by reading Math definitions we’ve collected from about a dozen Math books which includes an extremely old one.

**Math Words That Start With R:**

Rational Equation | Ratio | Ray |

Radian | Range | Reciprocal |

Radius | Radicand | Relation |

Radical | Residual | Remainder |

Reflection | Root Rules | Right Prism |

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### Math Words That Start With Rad

**Radian**is A special measurement unit that is used to measure things that are circular.**Radial**is a root of the number.**The Radical Axis**is the location of points with equal power in relation towards two circles.**The Radical Center**The center of three circles that represents the intersection point between the axes that are radical to each couple of circles.**Radicand**is the number that is inside the sign of radical.**Radii**is a plural of radius.**Radius**is The length that a straight line can in the middle of a circle, to the point of its circle’s circumference.**Radius of an Circle**A line segment beginning in the middle and extending toward the outside edge of the circle. Its radius equals half the diameter.**Radix Point**Radix Point The generalization of decimal points to numeration bases other that base 10.

## More Math Words That Start With R

**Rationalize the denominator**is a procedure which eliminates the radicals that make up the denominator.**Ray**Straight line that starts at an end point and then extends outwards in a single direction.**Random Number Generators**A device that is designed to generate a range of numbers in a fair way and in no particular or order and with no preference being accorded to any particular number.**Range**The range of an entire set of numbers is the biggest value in the set, minus the lowest value within the set. The range is just one number, not a large number of numbers.**Variable of Function**– the entire set of number f(x) to represent x within the domain of.**Rate**A certain percentage of the principal that indicates the amount of interest earned on a dollar over a year. The percentage indicates the number of hundredths of base will be used.**Ratio**– an integer number in the form a/b in which the numerator is known as a and b is referred to as the denominator. It is a combination of numbers, a ratio or the result of one quantity being divided with an additional (fraction).**Rational Number**is a number that can be written in fractions with integers serving as both the denominator and numerator.

## Words That Start With Re

**real Axis**the x-axis in diagrams like an Argand diagram.**Actual Numbers**are composed of both rational and irrational number.**real part**– the actual number x is referred to as”the real component” of the number complex x+iy in which both x and y are authentic together. i=sqrt(-1).**Real Variable**A variable with a value that is different from the actual numbers.**Reciprocal of a number**The number needs to be multiplied to arrive at one as the solution.**Rectangle**is a parallelogram with the right angle of four and having four faces.**Rectangular Coordinate System**– a plane comprised of an x an axis (the horizontal line) and an the y the axis (the vertical line).**Rectangular Solid**is a volume that is bounded by rectangular faces.**Recursion**Given some initial information , and a guideline on how to use it to gain more information, the process is then repeated with the updated information.**Reduce**to write the fraction into the simplest terms.**Reflect**– to duplicate images by flipping them over an arc so that it appears exactly like the mirror.**Reflex Angle**An angle that is of 180o to 360o.**Regrouping**Rearranging quantities by place values of numbers in calculations.**Regular Polygon**A polygon whose lengths of sides are all the same , and whose internal angles are the same.**Relation**– ordered pair with the form of (x, the letter y)**Relative Frequency**The number of items belonging to a certain type divided by the sum of the total numbers being looked at.**Relatively Primitive**Two numbers that share no elements other than 1.**Remainder**Remainder is the amount of money after division.**Remainder**– the amount of dividend that remains in the event that the quotient isn’t equal to divisor. It also contains is the title of an answer to a subtraction.**Repdigit**is an integer, with all digits identical, 11 222 and 333.**Repeting Decimal**– a decimal that’s the digits will are eventually repeated .3333.**Repunit**is an integer made up just of one number.**Residual**– the actual value less the value that was predicted. It’s the difference between the results obtained from observation and computation using a formula.

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