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Similarity in geometry means having the same shape or proportions, and can be applied to figures, triangles, polygons, curves and spaces. Learn how to identify similar figures, use the similarity symbol, and explore the properties and applications of similarity.
Learn how to calculate and apply the land equivalent ratio (LER), a concept in agriculture that compares the yield of sole cropping and intercropping. See examples, definitions, and references for different crops and systems.
A ratio shows how many times one number contains another, and can be written as a fraction, a colon, or a percentage. Learn about the origin, terminology, and applications of ratios in mathematics, physics, and other fields.
The geometric mean is a mean or average that indicates a central tendency of a set of positive real numbers by using the product of their values. It is often used for multiplicative or exponential data, such as growth rates or investment returns, and can be calculated using logarithms or geometry.
Relative change is a way to compare two quantities while taking into account their sizes. Learn the definition, formulas, examples, and applications of relative change, percent error, and percentage change.
Aspect ratio is the ratio of sizes in different dimensions of a geometric shape, such as a rectangle or an ellipse. Learn how aspect ratio is used in various fields, such as graphic design, film, photography, optics and more, and see a list of common aspect ratios.
Learn about the concept of equality in mathematics, which is a relationship between two quantities or expressions that have the same value or represent the same object. Find out the basic properties, types, and applications of equality in logic, algebra, analysis, and computer science.
Learn about the common dimensions and aspect ratios of electronic visual display devices, measured in pixels. Find a chart of display resolutions by vertical and horizontal resolution, and the standard names and initialisms for each resolution.