Area
Overview
Important
Area is a numerical value that represents the size of a two-dimensional region. For polygons, area can be calculated using specific formulas. For irregular shapes, area can be estimated or calculated by dividing the shape into known figures.
Important properties
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Area is always non-negative.
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If two shapes do not overlap, the area of their union is the sum of their areas.
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Congruent shapes have equal areas.
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Area is measured in square units.
Deeper topics