The line of symmetry can be defined as the axis or imaginary line that passes through the center of the shape or object and divides it into identical halves.
Line of Symmetry Examples
You can find if a shape has a Line of Symmetry by folding it. When the folded part sits perfectly on top (all edges matching), then the fold line is a Line of Symmetry.
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Line on one side then it way that same distance on the other side. Let's give you an example in thisMoreLine on one side then it way that same distance on the other side. Let's give you an example in this triangle. There's one mirror line that I can see.
A line of symmetry is a line that cuts a shape exactly in half. This means that if you were to fold the shape along the line, both halves would match exactly. Equally, if you were to place a mirror along the line, the shape would remain unchanged. A square has 4 lines of symmetry, as shown below.
Summary: A scalene triangle, parallelogram, and a trapezium are three examples of shapes with no line of symmetry.