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 MoreCircles have an infinite number of lines of symmetry. Any line that bisects a circle through its center is a line of symmetry. Circles are the only Euclidean shape with this property.
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 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 >An oval has two lines of symmetry. A line of symmetry is defined as the line that a figure can be divided into half, with the end result of the two halves matching up exactly. Each side of the divided side looks like a mirror image.
Full Answer >