true
always
The missing word is "bisect".
false
no
A quadrilateral whose diagonals bisect each other at right angles is a rhombus. each other at right angles at M. So AB = AD and by the first test above ABCD is a rhombus. 'If the diagonals of a parallelogram are perpendicular, then it is a rhombus
True
True
always
The missing word is "bisect".
diagonals.
A quadrilateral is a parallelogram if and only if its diagonals bisect each other (this should be in any geometry book)
False
false
no
its rhombus.rectangle,square
no
Parallelogram and rhombus.