Skip to content

Lines of Symmetry - Draw the Line

The preview is watermarked and lower resolution than the file you receive.

Worksheet details

CategoryMeasurement and Geometry
Grade bandGrades 1–3 (P.1–P.3)
Difficulty3 / 5
Activity formatWrite & Label
Worksheet codeMTH-28-B1-1
File typePDF
Content languageEnglish + Thai
Price19 Baht

Checking member access…

The preview is watermarked and lower resolution than the file you receive.

Lines of Symmetry - Draw the Line

Mathematics Measurement and Geometry worksheets on Lines of Symmetry for Grades 1–3 (P.1–P.3), difficulty 3/5. PDF, downloadable as soon as payment clears.

Curriculum indicators practised

Linked curriculum indicators

  • ค 2.2 ป.3/1Identify two-dimensional geometric shapes that have lines of symmetry, and the number of lines of symmetry

Before you begin

Teaching guide

What children will practise

Find and draw a line of symmetry on flat shapes, using the grid to split each shape into two matching halves.

What's in the worksheet

5 shapes, 20 points - Draw one line of symmetry on each: a square, a triangle, a circle, a rectangle and a heart - Each shape sits on squared paper, so children can count squares to find the middle - The answer key shows a vertical line through the middle of every shape

How to use it in class

Use after children have folded paper shapes so the halves match exactly. Allow about 10 minutes. - Have children cut out a heart and a rectangle and fold them to test the line they drew - Mark by an actual fold and accept every line that makes the shape coincide, including a horizontal line on a symmetric shape even if the key shows only one line - Extend by asking how many lines of symmetry a square has

Common sticking points

- Drawing a diagonal on the rectangle: it makes two equal halves, but they do not match when folded - Drawing the line slightly off-centre by not counting the grid squares - Drawing a horizontal line across the heart, which is not a line of symmetry

A PDF written to the Thai curriculum. Buy this worksheet once and keep it; no monthly plan is required.

What you get

Download it as soon as payment clears. The link stays in your account, so you can fetch the file again whenever you need it.

  • A print-ready A4 PDF, without the watermark
  • Instructions and content in one file, nothing to download separately
  • A private download link, kept in your account
  • Unlimited reprints for your own classroom

Ready for your next lesson

Every worksheet is checked before it is published — the content, the artwork, the layout and the accuracy of the language. Download it and hand it out the same day. If printing it yourself is inconvenient, add printing and postage to the order.

Written to the Thai curriculum

By a teacher who works in Thai classrooms, for Grades 1 to 6.

We can print and post it

Choose plain A4, heavier stock or photo paper, and we deliver it.

19 Baht

Checking member access…