It is a kite.
90 degrees
Yes - some trapezoids can have one line of symmetry.
There are two quadrilaterals with 2 lines of symmetry. A rhombus and a rectangle (if they are not also a square)
It only has 2 lines of symmetry because if you were to fold over its diagonals they wouldn't meet exactly unlike a square which will meet exactly from corner to corner.
Not at all. There are an infinite number of figures that have two lines of symmetry. For a start, an ellipse.
what quadrilateral has exactly two perpendicular sides.
A four-sided quadrilateral having two lines of symmetry is a rectangle
90 degrees
no.
It could be a kite or an irregular quadrilateral.
Yes - some trapezoids can have one line of symmetry.
make a square
If both pairs of opposite sides are parallel: A Rectangle, or a Square. If exactly one pair of opposite sides are parallel: An Isosceles Trapezoid. If it does not have parallel sides and one diagonal is the perpendicular bisector of the other: A Kite It is also possible that it does not have any parallel sides and neither diagonal is the perpendicular bisector of the other: A quadrilateral
There are two quadrilaterals with 2 lines of symmetry. A rhombus and a rectangle (if they are not also a square)
It only has 2 lines of symmetry because if you were to fold over its diagonals they wouldn't meet exactly unlike a square which will meet exactly from corner to corner.
Not at all. There are an infinite number of figures that have two lines of symmetry. For a start, an ellipse.
I don't think there's any special name for this.