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The number of lines of symmetry in a polygon corresponds to the number of sides it has. If a polygon has n sides, then its symmetry will be n lines of symmetry and it will have one point of symmetry. A pentagon has five lines of symmetry, nonagon has 9, n-gon has n lines of symmetry, so on and so forth.

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Q: Do polygons have to have one line of symmetry?
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Related questions

Do polygons have line symmetry?

yes


Does a regular polygons have line symmetry?

Yes It Does


Are quadrangles polygons?

Yes they are because every polygon has at least one line of symmetry.:)


Do all regular polygons have line symmetry?

yes


Do all polygons have rotational and line symmetry?

Yes.


What polygon has rotational and line symmetry?

All regular polygons do.


What shape has more than one line of symmetry?

A circle (infinitely many lines of symmetry), ellipse, rectangle, and all regular polygons.


Which shapes does not have line of synmetry?

There would be too many to name. All regular polygons have a line of symmetry, but there are still polygons that don't.


What regular polygons have a line of symmetry that is also a diagonal of the polygon?

almost all even number of sided polygons, regular has to be


What shape has one line of symmetry and no rotational symmetry?

Isosceles triangle, kite. -improvement: an isosceles triangle actually has three lines of symmetry, equal to the number of sides. It is easy to design irregular polygons with an odd number of sides that have just one line of symmetry. A parabola. Many more functions that are more complex - cardioid, for example.


What kinds of polygons are symmetrical?

All regular polygons A polygon is symmetrical if its sides that cross the line of symmetry are halved by the line of symmetry and if the sides that do not cross the line of symmetry have the same positions in space, the same lengths, and the same angles with their neighboring sides as do the sides on the other side of the line of symmetry. The only symmetrical triangles are isosceles triangles (equilateral triangles are isosceles). The only symmetrical quadrilaterals are squares, rectangles, rhombi (the line of symmetry connects either pair of opposite corners), isosceles trapezoids, and kites.


What polygons have three or more lines of symmetry?

Regular polygons.