All about Shapes
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Transcript of All about Shapes
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All about Shapes
Ask Boffin!
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Properties of Shapes
Number of sidesNumber of anglesNumber of lines of symmetryRegular or irregularRight AnglesParallel 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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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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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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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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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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Properties of a Trapezium
Has unequal sidesOne pair of opposite sides are parallel Usually has NO lines 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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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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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 triangleMay 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 ShapeShapes are regular when
All their angles are the same size
All their sides are the same length
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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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Properties of a Regular Hexagon
Has 6 equal sides Has 6 equal anglesHas 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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Properties of a Regular Pentagon
Has 5 equal sides Has 5 equal anglesHas 5 lines of symmetry
Polygons
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Polygons
Shapes with many sides!
Polygons
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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