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A square or other rhombus (= parallelogram with 4 equal sides, whether or not they're at right angles).
Also, any other regular 4n-gon -- i.e., regular polygon whose number of sides is a multiple of 4 -- will have pairs of perpendicular diagonals. So a regular octagon has two such pairs.
What else can I help you with?
Are the diagonals of a rectangle sometimes always or never perpendicular?
The diagonals of a rectangle are never perpendicular but the diagonals of a square are perpendicular
What diagonals are always perpendicular?
The diagonals of a square are always perpendicular.
Are the diagonals of a rhombus perpendicular?
Yes, the diagonals of a rhombus are perpendicular.
Are the diagonals of a rhombus sometimes perpendicular?
A rhombus has 4 equal sides and the diagonals are always perpendicular
Are the diagonals of a rhombus are always perpendicular?
No. The diagonals of a rhombus are perpendicular only if the rhombus is a square.
Are a trapeziums diagonals perpendicular?
No but the diagonals of a square, rhombus and a kite are perpendicular to each other
Does a kite have perpendicular sides?
No but its diagonals are perpendicular
Does a rhombus have perpendicular?
The diagonals of a rhombus are perpendicular
Does a rhombus have perpendicular diagonals?
Yes the perpendicular diagonals intersect at right angles or 90 degrees
Does a parallelogram have perpendicular diagonals?
No, not necessarily. It would have to also be a square or a kite in order to have perpendicular diagonals.
What is an attribute of a square that is not an attribute of rectangle?
The diagonals of a square are perpendicular whereas the diagonals of a rectangle are not perpendicular.
If the diagonals of a quadrilateral are perpendicular can the quadrilateral be a rectangle?
Sure, a square is a rectangle and the diagonals of a square are perpendicular.
