true
The missing word is "bisect".
always
false
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
A quadrilateral is a parallelogram if and only if its diagonals bisect each other (this should be in any geometry book)
true
The missing word is "bisect".
always
If you are talking about the diagonals of a quadrilateral, the only quadrilateral that have diagonals that are perpendicular and bisect each other is a square, because a rectangle has bisecting diagonals, while a rhombus has perpendicular diagonals. And a square fits in both of these categories.
may or may not be
Square
diagonals.
the anser to this question is a trapiezuim as it could have right angles and its diagonals definatly do not bisect each other
square