Mathness!Math Worksheets
Open the grade 4 sheets
Finding lines of symmetry: lines where a shape folds into two matching halves. Some shapes have several, and some have none.
Make a sheetDownload PDFThe PDF has this sheet, its answer key and a guide for grown-ups.
Imagine folding along the line. If the two halves land exactly on each other, it's a line of symmetry. Try across, up and down, and along each diagonal.
Watch for: Giving a parallelogram a line of symmetry: its halves don't match when folded. Checking only across and up-and-down, and missing diagonal lines. Drawing a line that splits a shape in half but doesn't fold it onto itself.
At home: Cut shapes from paper and fold them to test lines of symmetry. Letters work too: A has one, H has two, and F has none.
Luna's Space Adventure
Grade 4 · Lines of symmetry · 4.G.A.3
Astronaut Luna is exploring a far-off corner of space. Solve each problem to help Luna's mission go smoothly!
Fold it in your mind. Draw every line where both halves match.
Circle the shapes that have at least one line of symmetry.
Luna's Space Adventure
Grade 4 · Lines of symmetry · 4.G.A.3
Astronaut Luna is exploring a far-off corner of space. Solve each problem to help Luna's mission go smoothly!
Fold it in your mind. Draw every line where both halves match.
Circle the shapes that have at least one line of symmetry.
New problems every time, three levels (gentle, core and stretch), themes to pick from, a second page if you want one. Each sheet comes with an answer key and a one-page guide for grown-ups.
Save to PinterestCommon Core 4.G.A.3 · Find and draw lines of symmetry.
Also: Maryland 2025 2.GR.B.6 · Texas TEKS 4.6B · Florida B.E.S.T. MA.3.GR.1.3 · Virginia SOL 2.MG.3