If you're seeing this message, it means we're having trouble loading external resources for Khan Academy.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Line of symmetry

1 video
1 skill
A line of symmetry for a two-dimensional figure is a line across the figure such that the figure can be folded along the line into matching parts. In this tutorial, we'll identify line-symmetric figures and draw lines of symmetry. Common Core Standard: 4.G.A.3

Axis of symmetry

VIDEO 2:47 minutes
Do you know identical twins? Or maybe you are one? If so, then you know something about symmetry. In geometry, the axis of symmetry separates two identical sides.

Axis of symmetry