Sometimes true:             Sometimes false

Sometimes true (when the rectangle is a square)  Sometimes false:






3. One pair of opposite sides of a trapezoid are congruent.

Sometimes true (when it's an isosceles trapezoid,  sometimes its false



4. Sides of a rhombus are congruent.

Always true


5. Diagonals of a square are perpendicular. 
Always true




Edwin
 

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