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

Introduction to reflective symmetry

VIDEO 2:47 minutes
Sal introduces the concept of an "axis of symmetry."

Axis of symmetry

PRACTICE PROBLEMS
Draw and identify lines of symmetry. Create and identify symmetrical shapes.