## Parallel Lines

Lines are parallel if they are always the same distance apart (called “equidistant“), and will never meet. Definition of Parallel Lines Parallel lines in geometry are lines in a plane which do not meet. They don’t intersect each other at any point. By extension, a line & a plane, or 2 planes, in 3D Euclidean … Continue reading "Parallel Lines"

Read More## Subtracting Fractions

Definition A fraction like 2/3 says we have 2 out of the 3 parts the whole is divided into. The top number is called numerator The bottom number is called denominator There are 3 simple steps to subtract fractions Make sure the bottom numbers (the denominators) are the same Subtract the top numbers (the numerators). … Continue reading "Subtracting Fractions"

Read More## Relative Frequency

Definition Relative Frequency is How often something happens divided by all outcomes. To compute relative frequency, one obtains a frequency count for a subgroup of the population and a frequency count for the total population. The relative frequency is: How to Find Relative Frequency Relative frequency = Subgroup count / Total count The above equation … Continue reading "Relative Frequency"

Read More## Reciprocal of Number

The reciprocal of a number is one divided by that number Reciprocal of a Fraction To get the reciprocal of a fraction, simply switch the top and bottom of the fraction (numerator and denominator). Reciprocal of a Reciprocal The reciprocal of a reciprocal takes you back to where we started: Remember that “Reciprocal” comes from the Latin reciprocus … Continue reading "Reciprocal of Number"

Read More## Difference

Definition Difference is the result of subtracting one number from another. How much one number differs from another. More Examples Here are more examples about difference: Numbers Difference Reason 7 and 5 2 7 – 5 = 2 4 and 9 5 9 – 4 = 5 11 and 8 3 11 – 8 = … Continue reading "Difference"

Read More## Multiplicative Inverse

Multiplicative Inverse is Another name for Reciprocal. What you multiply by a number to get 1 In other words: When we multiply a number by its “Multiplicative Inverse” we get 1. But not when the number is 0 because 1/0 is undefined! More Examples of Multiplicative Inverse Number Multiplicative inverse 2 1/2 3 1/3 5 … Continue reading "Multiplicative Inverse"

Read More## Angles

Definition An angle measures the amount of turn Names of Angles As the Angle Increases, the Name Changes: Type of Angle Description Illustration Acute Angle is less than 90° Right Angle is 90° exactly Obtuse Angle is greater than 90° butless than 180° Straight Angle is 180° exactly Reflex Angle is … Continue reading "Angles"

Read More## Infinite Series

Definition of Infinite Series Infinite series are the sum of infinitely many numbers listed in a given order & related in a given way. For an infinite series a1 + a2 + a3 + … , a quantity sn = a1 + a2 + … + an, which involves adding only the first n terms, is called a partial sum. For Sn approaches a fixed number … Continue reading "Infinite Series"

Read More## Additive Inverse

Definition of Additive Inverse The additive inverse of a number is another number you add to a number to create the sum of zero. In other words, additive inverse of x is another number, for examle y, as long as the sum of x + y equals zero. The additive inverse of x is equal … Continue reading "Additive Inverse"

Read More## Composite Number

Composite number is a whole number that can be made by multiplying other whole numbers. Example: 10 can be made by 5 × 2 so is a composite number. Not Composite number 5 = 1 × 5, Is not composite number because 1 × 5 isn’t using other whole numbers 7 = 2 × 3.5, Is … Continue reading "Composite Number"

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