An isosceles triangle has one line of symmetry
An irregular pentagon.
The letter D!
a Square.
An isosceles triangle has one line of symmetry
Every right circular cone, conic section, and regular polygon has at least one line of symmetry.
An isosceles triangle has one line of symmetry
Trapezium
a heart
the shape is a heart.
scalene triangle.
Isosceles triangle
a pentagon
polygon!
An irregular pentagon.
You cannot have one parallel line. There must be another line that it is parallel to. Also, 1 symmetry is meaningless - you can have one axis of symmetry or rotational symmetry of order one. The answer will depend on which one it is.
well it has 1 line but it depends on the shape of the rhombus
Circle, Square, Triangle