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Learning Goal
Part of: Draw and identify lines and angles, and classify shapes by properties of their lines and angles — 3 of 3 cluster items
Recognize a line of symmetry for a two-dimensional figure
4.G.A.3
**4.G.A.3**: Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify line-symmetric figures and draw lines of symmetry.
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4.G.A.3: Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify line-symmetric figures and draw lines of symmetry.
What you'll learn
- Define a line of symmetry as a line across a two-dimensional figure such that the figure can be folded along the line into two matching parts
- Identify whether a given two-dimensional figure has line symmetry
- Draw all lines of symmetry for common two-dimensional figures (rectangles, squares, regular polygons, circles, letters, and real-world shapes)
- Recognize that some figures have no lines of symmetry, some have exactly one, and some have multiple lines of symmetry
- Distinguish a line of symmetry from a line that merely divides a figure into two equal-area parts but does not produce matching (mirror-image) halves
Slides
Interactive presentations perfect for visual learners • In development
Slides
In development
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