polygons shapes with many sides! two-dimensional shapes (2d) these shapes are flat and can only be...
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Polygons
Shapes with many sides!
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Two-dimensional Shapes (2D)
• These shapes are flat and can only be drawn on paper.
• They have two dimensions – length and width.
• They are sometimes called plane shapes.
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PolygonsTwo-dimensional shapes
that have sides made from straight lines.
• E.g. triangles squares hexagons
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Pentagon• A two-dimensional
shape with five straight sides and five angles.
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Hexagon• A two-dimensional
shape with 6 straight sides and 6 angles.
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Octagon• A two-dimensional
shape with 8 straight sides and 8 angles.
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What shape is this?
Polygons
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A Hexagon
Polygons
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How many lines of symmetry has a Hexagon?
1 2
3
4
5
6
Polygons
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Properties of a Regular Hexagon
Has 6 equal sides
Has 6 equal angles
Has 6 lines of symmetry Polygons
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What shape is this?
Polygons
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A Pentagon
Polygons
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How many lines of symmetry has a Pentagon?
2
3 4
5
1Polygons
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Properties of a Regular Pentagon
Has 5 equal sides
Has 5 equal angles
Has 5 lines of symmetry Polygons
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Polygons
Shapes with many sides!
Polygons
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Lines of Symmetry - Look at these shapes
Can you suggest a rule?
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Regular shapes
All the sides are the same length
All the angles are equal
Have the same number of lines ofsymmetry as the number of sides
RegularShapes
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How many lines of symmetry?
Heptagon Octagon
Look at these shapes
RegularShapes
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Lines of symmetry
Heptagon Octagon
7 8
RegularShapes
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Lines of symmetry
Heptagon Octagon
7 8
RegularShapes