Wikimedia
Wikipedia: Plane of Symmetry
This site from the free encyclopedia, Wikipedia, provides a basic definition for plane of symmetry. Links are given for additional information on related subjects.
Curated OER
Diamond
Gives information on the different kinds of symmetry operations, including mirror planes, rotational axes, and rotoinversion axes.
Curated OER
Ic Teachers: Line or Reflective Symmetry
This website will provide you with a quick review of line or reflective symmetry. It also has questions and answers to help you understand line/reflective symmetry.
Curated OER
Ic Teachers: Line or Reflective Symmetry
This website will provide you with a quick review of line or reflective symmetry. It also has questions and answers to help you understand line/reflective symmetry.