The answer is no the diagonals do not have to bisect each other. That does not necessarily mean that there isn't a quadrilateral that has bisecting diagonals. A quadrilateral is a four-sided polygon which is a close plane figure; in this case with four sides. Meaning that all ends of the straight lines that configure a polygon must connect someway, somehow.
True
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
diagonals.
the anser to this question is a trapiezuim as it could have right angles and its diagonals definatly do not bisect each other
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.
Square, Rhombus
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