A regular pentagon has five lines of symmetry. An irregular pentagon, with non-equal side lengths and internal angles, may or may not have any lines of symmetry.
Know MoreA line of symmetry is a line in a two-dimensional shape where the remnants on both sides are exact mirrored versions of each other. A line of symmetry in a regular pentagon must go from the center of any side to the vertex directly opposite to it. Because a regular pentagon has five sides, it also has five lines of symmetry. Most regular polygons have a number of lines of symmetry that are equal to the number of its sides.
Learn more about ShapesA 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 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.
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 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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