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![Page 1: All about Shapes Ask Boffin! Properties of Shapes Number of sides Number of angles Number of lines of symmetry Regular or irregular Right Angles Parallel.](https://reader035.fdocuments.us/reader035/viewer/2022062716/56649dc95503460f94abfbd7/html5/thumbnails/1.jpg)
All about Shapes
Ask Boffin!
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Properties of Shapes
Number of sides
Number of angles
Number of lines of symmetry
Regular or irregular
Right Angles
Parallel lines
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Shapes
Quadrilaterals
Triangles
Polygons
Key Words
Regular Shapes
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Quadrilaterals
Shapes with 4 sides!
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What shape is this?
Quadrilaterals
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A Square
Quadrilaterals
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How many lines of symmetry has a Square got?
1 23
4
Quadrilaterals
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Properties of a Square
Has 4 equal sides
Has 4 equal angles
Each angle is a right angle
Has 4 lines of symmetry
Is a regular shape
Quadrilaterals
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What shape is this?
Quadrilaterals
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A Rectangle
Quadrilaterals
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How many lines of symmetry has a Rectangle got?
1
2
Quadrilaterals
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Properties of a Rectangle
Has 2 pairs of equal sides
Has 4 equal angles
Each angle is a right angle
Has 2 lines of symmetry
Is an irregular shape
Quadrilaterals
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What shape is this?
Quadrilaterals
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A Parallelogram
Quadrilaterals
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How many lines of symmetry has a Parallelogram got?
None!
Quadrilaterals
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Properties of a Parallelogram
Has 2 pairs of equal sides
Has 2 pairs of equal angles
Opposite sides are parallel
Has NO lines of symmetry
Is an irregular shape
Quadrilaterals
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What shape is this?
Quadrilaterals
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A Rhombus
Quadrilaterals
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How many lines of symmetry has a Rhombus got?
21Quadrilaterals
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Properties of a Rhombus
Has 4 equal sides
Has 2 pairs of equal angles
Opposite sides are parallel
Has 2 lines of symmetry
Is an irregular shape
Quadrilaterals
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What shape is this?
Quadrilaterals
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A Trapezium
Quadrilaterals
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How many lines of symmetry has a Trapezium got?
None!
Quadrilaterals
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How many lines of symmetry has thisTrapezium got?
1
Because these angles are equal.
Quadrilaterals
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Properties of a Trapezium
Has unequal sides
One pair of opposite sides are parallel
Usually has NO lines of symmetry
Is an irregular shape
Quadrilaterals
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What shape is this?
Quadrilaterals
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A Kite
Quadrilaterals
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How many lines of symmetry has a Kite got?
1Quadrilaterals
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Properties of a Kite
Has 2 pairs of equal sides
Has 1 pair of equal angles
Equal sides are adjacent
Has 1 line of symmetry
Is an irregular shape
Quadrilaterals
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Quadrilaterals
Shapes with 4 sides!
Quadrilaterals
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Triangles
Shapes with 3 sides!
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What type of triangle is this?
Triangles
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An Equilateral Triangle
Triangles
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How many lines of symmetry has an Equilateral Triangle got?
1
2 3
Triangles
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Properties of an Equilateral Triangle
Has 3 equal sides
Has 3 equal angles
Each angle is a 60o angle
Has 3 lines of symmetry
Is a regular shape
Triangles
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What type of triangle is this?
Triangles
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An Isosceles Triangle
Triangles
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How many lines of symmetry has an Isosceles Triangle got?
1Triangles
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Properties of an Isosceles Triangle
Has 2 equal sides
Has 2 equal angles
Has 1 line of symmetry
Is an irregular shape
Triangles
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What type of triangle is this?
Triangles
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A Scalene Triangle
Triangles
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None!
How many lines of symmetry has a Scalene Triangle got?
Triangles
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Properties of an Scalene Triangle
Has NO equal sides
Has NO equal angles
Has NO lines of symmetry
Is an irregular shape
Triangles
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What type of triangle is this?
Triangles
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A Right Angled Triangle
Triangles
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A Right Angled Triangle is different
It may be scalene or it may be isosceles
But it always has a right angle!
Triangles
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Properties of a Right Angled Triangle
Has 1 right angle
May be an isosceles triangle
May have 1 line of symmetry
Is an irregular shape
It will be isosceles and have 1 line of symmetry when these 2
sides are equal.
Triangles
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Triangles
Shapes with 3 sides!
Triangles
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Key Words
Parallel
Perpendicular
Diagonal
Vertex
Bisect
Regular Shape
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Regular Shape
Shapes are regular when
All their angles are the same size
All their sides are the same length
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Parallel
Lines are parallel
when they are always the same distance apart.
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Perpendicular
Lines are perpendicular
when they meet at right angles.
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Vertex
A Vertex is a corner of a shape where two lines meet.
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Diagonal
A Diagonal is a straight line that joins one corner (vertex) of a shape to a non adjacent corner (vertex)
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Bisect
A line that cuts a shape exactly in half, Bisects the shape
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Key Words
Parallel
Perpendicular
Diagonal
Vertex
Bisect
Regular Shape
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Polygons
Shapes with many sides!
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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