VC2M4SP04 Official strand: Space

Symmetry

Look for exact matches after a reflection or a turn.

Independent Pi Leo Academy learning material organised around the Victorian Curriculum F–10 Version 2.0 Level 4 descriptors; independent curriculum review is continuing. Year 4 is not an official NAPLAN testing year; NAPLAN is held in Years 3, 5, 7 and 9. It is not an official VCAA, ACARA, NAPLAN, government or IXL resource.

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Is the dashed line a line of symmetry for the whole design?

Include the outline and every solid inside line. Ignore the dashed guide line and its label.

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The outline is a square. Its sides are horizontal and vertical. There are no solid inside lines. Dashed guide mirror is at 45° anticlockwise from a horizontal line pointing right and passes through the centre of the outline. The dashed line is a guide, not part of the solid design.

ANo — the outline does not match BNo — the outline matches but the inside lines do not CA line of symmetry must be outside the shape DYes — the outline and inside lines match

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Answer: Yes — the outline and inside lines match

Imagine folding along the dashed line.
Check the outside boundary first, then every solid inside line.
Answer: Yes — the outline and inside lines match.

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Curriculum reference

Victorian Curriculum F–10 Version 2.0

VC2M4SP04

recognise line and rotational symmetry of shapes and create symmetrical patterns and pictures, using dynamic geometry software where appropriate

These quizzes practise concepts within this topic. Multiple-choice answers alone do not demonstrate drawing, conducting an investigation or using a digital tool.

Activities to practise beyond the quiz

Recognising/reflection/turn questions do not create a symmetrical picture or pattern, or operate dynamic geometry software.
Recognising/reflection/turn questions do not create a symmetrical picture or pattern, or operate dynamic geometry software.
Recognising/reflection/turn questions do not create a symmetrical picture or pattern, or operate dynamic geometry software.

VC2M4SP04-C01Recognise line symmetry of shapes.
VC2M4SP04-C02Recognise rotational symmetry of shapes.
VC2M4SP04-C03Create symmetrical patterns.
VC2M4SP04-C04Create symmetrical pictures.
VC2M4SP04-C05Use dynamic geometry software where appropriate.

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Skills in this topic

Traceable coverage

Subskills

Supplied alignment skills

01Identify lines of symmetry
02Draw lines of symmetry
03Count lines of symmetry
04Rotational symmetry