An isosceles trapezium.
kite
2 congruent sides and the opposite angles of the sides are also congruent. There is only 1 line of symmetry.
An isosceles triangle.
An arrowhead, for example.
An arrowhead is one example.
Kite
A trapezoid is a quadrilateral that sometimes has a line of symmetry but not always. A trapezoid can have a line of symmetry if it is an isosceles trapezoid, where the non-parallel sides are congruent. However, in a general trapezoid where the non-parallel sides are not equal in length, there is no line of symmetry. This distinction is important in understanding the properties of different types of quadrilaterals.
If it is an isosceles trapezoid, then there is only one line of symmetry, right down the middle of it from top to bottom. If it is a plain old trapezoid with no congruent sides, then there are no lines of symmetry.
A kite is a quadrilateral, called a deltoid. Among its four sides, there is one line of symmetry. Two sets of adjacent sides across the line of symmetry are the same length. One set of opposite angles is congruent. The diagonals of kites form 90° angles.
the line of symmetry
Its base angles are the same and it has a pair of opposite parallel sides of different lengths with one line of symmetry.
No.