There are so many answers, it's not even funny.
Circle
Equilateral Triangle
Isosceles Triangle
Square
Rectangle
Rhombus
Parallelogram
Some Trapezoids
Perfect Pentagon
Perfect Hexagon
et cetera, et cetera.
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Try this:
Every right circular cone, conic section, and regular polygon
has at least one line of symmetry.
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An isosceles triangle has one line of symmetry
a symmetrical shape
Every right circular cone, conic section, and regular polygon has at least one line of symmetry.
Trapezium
a pentagon