Decimal Fractional Parts of Segment Dim's on Hypotenuses of Dissimilar Right Triangles
DECIMAL FRACTIONS:
The decimal, fractional part of a positive real number is the excess beyond that number's integer part; e.g., for the number 3.75, the numbers to the right of the decimal point make up the decimal, fractional part of the positive real number 3. The decimal fractional part, .75 equals the fraction 3/4.
For sources, see links below;