Three squares and three common vertices. Prove that the quadrilateral ABCD is a rectangle.
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So AD has the same length as square side FB. It must therefore be parallel to BC, and so ABCD is a rectangle.
Tooth bridges and toothpaste
soap, soap box
and the washing line
All together with pegs to dry
The wind is strongly blowing
With an eerie atmosphere feeling
Socks, shirts and dresses are hanging
The sun comes out, the clouds are racing
Washing lines have much for saying