Is It a Line of Symmetry?
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Is It a Line of Symmetry?
Line of symmetry worksheet for Grade 4: nine shapes, each with a dashed line, to circle yes or no: is the line a line of symmetry? With an answer key.
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Teach it first
Lines of SymmetryA teaching handout to hand out before this sheet: the rule, worked examples and common mistakes.- Pages
- 1
- Last updated
- Time
- About 15 minutes
- Answer key
- Included
- Printing
- Black and white
- Related curriculum
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Name and draw points, lines, line segments and rays, find parallel and perpendicular lines, sort figures by them, and draw the lines of symmetry of a figure.
Reviewed by Mrs. Catherine Reynolds, Teacher. How we check worksheets
How to use this sheet
- Have a small mirror, or fold paper shapes, to check lines of symmetry.
- For parallel and perpendicular, have the child trace the lines with two fingers and see if they could ever meet.
- Have the child label each figure with its symbol, such as arrows for a line and a dot for an end point.
Common mistakes
- Thinking a diagonal of a rectangle is a line of symmetry. Fold one to check: the halves do not match.
- Mixing up a ray and a line segment. A ray has one end point and goes on in one direction.
- Calling lines perpendicular if they cross at any angle. Perpendicular lines make right angles.
