そもそもスクエアとは何でしょうか?パート 4: 正方形は平行線ですか?平行四辺形は正方形ですか?
What is a Parallelogram, Is Square a Parallelogram?, Is Rectangle a Parallelogram?
Is a rectangle a parallelogram always, sometimes or never?
そもそもスクエアとは何でしょうか?パート 3: 正方形はひし形ですか?ひし形は正方形ですか?
そもそも、RECTANGLE とは何でしょうか?パート 3: 長方形は平行線ですか?平行四辺形は長方形ですか?
Name each quadrilateral-parallelogram, rectangle, rhombus, or square- is always true. #7
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Easy way to remember parallelogram, rectangle, rhombus and square properties.
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