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  2. Ratio - Wikipedia

    en.wikipedia.org/wiki/Ratio

    Euclid defines a ratio as between two quantities of the same type, so by this definition the ratios of two lengths or of two areas are defined, but not the ratio of a length and an area. Definition 4 makes this more rigorous. It states that a ratio of two quantities exists, when there is a multiple of each that exceeds the other.

  3. Cross-ratio - Wikipedia

    en.wikipedia.org/wiki/Cross-ratio

    (If one of the four points is the line's point at infinity, then the two distances involving that point are dropped from the formula.) The point D is the harmonic conjugate of C with respect to A and B precisely if the cross-ratio of the quadruple is −1, called the harmonic ratio.

  4. Section formula - Wikipedia

    en.wikipedia.org/wiki/Section_formula

    In coordinate geometry, the Section formula is a formula used to find the ratio in which a line segment is divided by a point internally or externally. [1] It is used to find out the centroid, incenter and excenters of a triangle. In physics, it is used to find the center of mass of systems, equilibrium points, etc. [2] [3] [4] [5]

  5. Proportionality (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Proportionality_(mathematics)

    Two functions and () are proportional if their ratio () is a constant function. If several pairs of variables share the same direct proportionality constant, the equation expressing the equality of these ratios is called a proportion , e.g., ⁠ a / b ⁠ = ⁠ x / y ⁠ = ⋯ = k (for details see Ratio ).

  6. Relative change - Wikipedia

    en.wikipedia.org/wiki/Relative_change

    In any quantitative science, the terms relative change and relative difference are used to compare two quantities while taking into account the "sizes" of the things being compared, i.e. dividing by a standard or reference or starting value. [1] The comparison is expressed as a ratio and is a unitless number.

  7. Intercept theorem - Wikipedia

    en.wikipedia.org/wiki/Intercept_theorem

    The intercept theorem, also known as Thales's theorem, basic proportionality theorem or side splitter theorem, is an important theorem in elementary geometry about the ratios of various line segments that are created if two rays with a common starting point are intercepted by a pair of parallels.

  8. 6 Essential Baking Ratios That You Should Know - AOL

    www.aol.com/6-essential-baking-ratios-know...

    Baked Good . Baking Ratio . Pie Dough. 3 parts flour: 2 parts fat: 1 part water. Muffins. 2 parts flour: 2 parts liquid: 1 part egg: 1 part fat. Quick Breads

  9. Compositional data - Wikipedia

    en.wikipedia.org/wiki/Compositional_data

    As the total amount is identified as 100, the compositional vector of D components can be defined using only D − 1 components, assuming that the remaining component is the percentage needed for the whole vector to add to 100.