Hi,

If parallelogram ABCD has congruent diagonals, the parallelogram "must be" a???

square only, rhombus only, square or rhombus, rectangle

Choosing answer by eliminating those incorrect:

rhombus answers definitely out.

square "only" definitely not true. As Rectangles have equal diagonals, as well

rectangle, is the only one answer left to choose from.



 

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