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What is a SQUARE, anyway? Part 2: Is a Square a Rectangle? Is a Rectangle a Square?

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today's daily dose of math is part

two in the series what is a square

anyway in part one we talked about

the basic facts about a square

and we looked at the definition of a

square but now in part two

we're asking the question is a square

also a rectangle

and is a rectangle also a square

well the answer is going to be yes and

no

let's look at the definition of a square

first

a square is a quadrilateral that has

four congruent sides and at least one

internal 90 degree angle we can see in

this diagram of a square

that the four sides are congruent as

shown with these little lines

and that it in fact has four internal 90

degree angles


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