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I'm pretty sure the answer is C.
An octagon has 8 sides, a heptagon 7, and a hexagon 6. The remaining answer has 9 sides.
The polygons having nine lines of symmetry is option regular nonagon.
What is a polygon?
A line of symmetry is a line that cuts a form precisely in half of. which means that in case you were to fold the shape along the line, both halves would healthy precisely. equally, if you had been to location a mirror alongside the line, the shape could remain unchanged. A square has four traces of symmetry, as proven below.
A Polygon is a closed determine made from line segments (not curves) in a two-dimensional plane. Polygon is the aggregate of words, i.e. polygon minimum of 3 line segments is needed to attach give up to give up, to make a closed determine.
Triangles, hexagons, pentagons, and quadrilaterals are all examples of polygons. The name offers an illustration of how many facets the shape has. for instance, a triangle consists of three sides even as a quadrilateral consists of 4 facets.
A polygon is a flat, two-dimensional form with immediately aspects this is completely closed. the sides need to be immediately. Polygons might also have any quantity of aspects. A polygon. A form with curved facets isn't always a polygon.
The strains of symmetry in a polygon are the imaginary lines passing thru the center of the polygon that divides the form into comparable halves. As we realize, abnormal polygons do not have strains of symmetry.
Learn more about line of symmetry here:-https://brainly.com/question/1553710
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