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CCSS 4.G.3 Worksheets

CCSS 4.G.3 (Common Core, 4th Grade): "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." The worksheets below practice this standard. Each one is a free printable PDF with an answer key, comes in multiple versions, and can also be assigned digitally - no login or account needed.

Geometry Draw and identify lines and angles, and classify shapes by properties of their lines and angles. 3Recognize 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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4g3

CCSS 4.G.3 Worksheets - Determining Symmetry worksheet

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Determining Symmetry

4g3

Decide whether a drawn line splits a shape into two matching halves.
Use the idea of folding or a mirror reflection to check if both sides line up.
Spot when a line is not a line of symmetry because parts don’t match or don’t line up.
Describe the line of symmetry as the line that makes two equal, mirrored sides.

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CCSS 4.G.3 Worksheets - Identifying Lines of Symmetry in Shapes worksheet

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Identifying Lines of Symmetry in Shapes

4g3

Count the lines of symmetry in a two-dimensional shape
Recognize a shape that has no line of symmetry
Recognize a shape with exactly one line of symmetry
Compare shapes by their symmetry rather than their name

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CCSS 4.G.3 Worksheets - Counting Lines of Symmetry worksheet

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Counting Lines of Symmetry

4g3

Find every line of symmetry in a shape.
Recognize shapes that have none.
Know that a regular shape has as many lines as it has sides.

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CCSS 4.G.3 Worksheets - Describing a Line of Symmetry worksheet

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Describing a Line of Symmetry

4g3

Say whether a line of symmetry runs vertically, horizontally or diagonally.
Recognize a shape with no line of symmetry.
See that turning a shape turns its line of symmetry with it.

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CCSS 4.G.3 Worksheets - Drawing the Lines of Symmetry worksheet

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Drawing the Lines of Symmetry

4g3

Draw every line of symmetry on a shape.
Remember the diagonal lines on a square.
Show that some shapes have none.

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