They must meet at right angles and only one of them must bisect the other. (if both bisect one another, the quadrilateral will be a square).
It can be but a square and a rhombus diagonals are also perpendicular and therefore intersect at 90 degrees and they too are both quadrilaterals.
If the diagonals of a quadrilateral are perpendicular to each other, then the quadrilateral is a square.Or a kite.
One answer is a kite.
The area of a quadrilateral kite is 0.5 times the product of its diagonals.
Square, rhombus and a kite quadrilateral
A kite has two diagonals. To see a drawing that makes it perfectly clear, use the link below.A 4 sided quadrilateral kite has 2 diagonals
A kite.
STUDY ISLAND: kite
Square, Rhombus. * * * * * Or a kite or arrowhead.
A square, rhombus or a kite
Any quadrilateral other than a square or kite could have diagonals meeting at 30 degrees.
Any kite or square.