ChaseTheKing ChaseTheKing

13-02-2018
Mathematics

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prove: the diagonals of a rectangle are equal

prove the diagonals of a rectangle are equal class=

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munkherdn munkherdn

13-02-2018

AB=(a;0)-(0;0)=a
AD= (0;b)-(0;0)=b
BC=AD
AB=DC
that means its a square. Using Pythagorean theorem
DB^2=AD^2+AB^2 ; AC^2=AB^2+BC^2
and DB^2 and AC^2 are equal

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Bayernfan342423 Bayernfan342423

13-05-2022

Answer:

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