Back to Understanding Symmetry

Instructions

  1. Label every symmetry you perceive on each image.
  2. Choose which type of symmetry to be labeled first.
  3. Use mouse scroll to zoom in/out the image for more precise labeling.
  4. Click the Submit button or press ENTER to finish current task.
  5. Buttons & Hotkeys:
    1. Click Rotation/Reflection flip switch or press R to toggle between label rotation and reflection.
    2. Click Label/Deletion flip switch or press D to toggle between labeling and deleting.
    3. Click the Undo Last button or press CTRL+Z to undo last Annotation/Deletion.
    4. Click the Reset View button or press CTRL+X center the image and reset zoom.
    5. Click the Clear All button to clear all annotations. Warning: this action cannot be recovered!

How to label Rotational Symmetry Center(s)

How to label a Reflection Symmetry Axis

A quick training to test your understanding of symmetry on real images

This study is carried under The Pennsylvania State University (PSU) IRB STUDY00008698, and funded by National Science Foundation (NSF) grant 1909315.