A regular heptagon has seven lines of symmetry. Each one runs from a vertex to the opposite side, bisecting the side at a 90-degree angle.
Know MoreAll regular polygons have as many lines of symmetry as they have sides. For regular polygons with an odd number of sides, the lines of symmetry run from vertex to opposite side, as with the heptagon. For regular polygons with even numbers of sides, the lines of symmetry run alternately from vertex to opposite vertex, and from side to opposite side. In each case, the side is bisected at a 90-degree angle. For a polygon to be considered regular, all of its sides must be of equal length.
Learn more about ShapesA regular decagon has 10 lines of symmetry, one line drawn through each vertex and one line drawn through the midpoint of each edge. A line of symmetry indicates where a polygon can be folded in half to form two equal shapes.
Full Answer >A regular hexagon with six equal sides has six lines of symmetry. For all regular polygons, the number of lines of symmetry is equal to the number of sides.
Full Answer >A rhombus has only two lines of symmetry. A rhombus is a four-sided, two-dimensional shape, also called a diamond, that falls under the category of quadrilaterals. Its sides are the same length, but angles are not 90 degrees.
Full Answer >A right triangle either has one or no lines of symmetry. An isosceles right triangle, one with two sides of equal length, has one line of symmetry. A scalene right triangle, one with no sides of equal length, has no lines of symmetry.
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