Hi

D = 

M(1,1), 

A(-2,5), MA= =5   m = -4/3  

T(3,5),  AT= =5   m = 0

H(6,1).  TH= =5          m = -4/3

M(1,1),  HM= =5          m= 0

All 4 sides have equal length,opposite sides parallel

adjacent sides are not perpendicular(slopes are NOT negative reciprocals) 

Rhombus but not a Square.





 

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