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Intersection

Explore Intersection on MathWorld


(1) In set theory, the intersection of two or more sets is the set of elements common to all sets. (2) In geometry, the intersection of two or more regions is the region that is common to all regions.

Intersection is a middle school-level concept.

Prerequisites

Set: In mathematics, a set is a finite or infinite collection of objects in which order has no significance and multiplicity is generally also ignored.

Classroom Articles on Pre-Algebra (Up to Middle School Level)

  • Absolute Value
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  • Least Common Multiple
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  • Arithmetic
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  • Line
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  • Arithmetic Series
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  • Origin
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  • Associative
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  • Polynomial
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  • Base
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  • Power
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  • Cartesian Coordinates
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  • Prime Factor
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  • Commutative
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  • Prime Factorization
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  • Decimal Expansion
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  • Prime Number
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  • Distributive
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  • Pythagorean Theorem
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  • Divisor
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  • Quotient
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  • Equal
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  • Real Line
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  • Factorial
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  • Real Number
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  • Fraction
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  • Relatively Prime
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  • Function Graph
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  • Right Angle
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  • Geometric Series
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  • Rounding
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  • Greatest Common Divisor
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  • Sequence
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  • Integer
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  • Series
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  • Interval
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  • Square Number
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  • Irrational Number
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  • Square Root
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