Diagonal facts for kids
Diagonal is a kind of straight line. A diagonal line does not go straight up, down, or across.
In mathematics, "diagonal" has different meanings. For example, in geometry a diagonal is any line that goes between the corners of a polygon. So a square has two diagonals, and a five-sided shape has five diagonals.In general the count of diagonal can be identified by a formula [n(n-3)]/2 where n is the total number of sides of shapes.
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Diagonal Facts for Kids. Kiddle Encyclopedia.