diagonals.
True
no
its rhombus.rectangle,square
Parallelogram and rhombus.
A parallelogram.
True
True
always
true
The missing word is "bisect".
A quadrilateral is a parallelogram if and only if its diagonals bisect each other (this should be in any geometry book)
False
no
false
no
its rhombus.rectangle,square
Parallelogram and rhombus.