1. Introduction
  2. Lines of Symmetry


If you fold a shape in half, where the two halves match then the image is said to have line symmetry or mirror symmetry. This folded line is a line of reflection.

Term: Symmetry: Exact similar part facing each other.

Observe the following pictures carefully and determine the lines of symmetry.


  1. Get a plain sheet of paper. Draw a straight line down the middle. Draw a shape on the left of the line and then place a mirror on the line. Observe the reflection of the image.
  2. Build symmetrical designs with pattern blocks or on a geoboard.