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Nuffield Free-Standing Mathematics Activity Geometrical design. Geometrical design. Can you name any of the geometrical shapes in these pictures?. This activity is about recognising shapes and their properties. Left-hand photo Decoramic Tile Centre http://www.decoramic.co.uk/.
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Nuffield Free-Standing Mathematics Activity Geometrical design
Geometrical design Can you name any of the geometrical shapes in these pictures? This activity is about recognising shapes and their properties Left-hand photo Decoramic Tile Centre http://www.decoramic.co.uk/
Think aboutWhat is special about…. parallel lines are always the same distance apart perpendicular lines meet at 90
have 3 sides and 3 angles Triangles sum of the angles = 180 Think aboutWhat is special about …. a right-angled triangle an obtuse-angled triangle an acute-angled triangle has one angle of 90 has one angle greater than 90 has three angles all less than 90 Think aboutWhy is it not possible for a triangle to have more than one right angle?
Think aboutWhat is special about…. Triangles an equilateral triangle an isosceles triangle a scalene triangle has3 equal sides and 3 equal angles. has2 equal sides and 2 equal angles. has3 different sides and 3 different angles. Think aboutWhat is each angle in an equilateral triangle?
Think aboutthe names of these polygons…. Polygons A quadrilateralhas4sides. Sum of the angles = 360 Apentagonhas5sides. Ahexagonhas6sides. Anoctagonhas8 sides
Rectangle Square Quadrilaterals Think about …What is special about these quadrilaterals? All sides equal Opposite sides equal Opposite sides parallel Opposite sides parallel All angles are 90⁰ All angles are 90⁰
Parallelogram Opposite sides equal Quadrilaterals Think about …What is special about these quadrilaterals? Rhombus All sides equal Opposite sides parallel Opposite sides parallel Opposite angles equal Opposite angles equal
Trapezium Kite One pair of sides parallel Two pairs of equal sides Quadrilaterals Think aboutWhat is special about these quadrilaterals? One pair of equal angles
Regular polygons Think about …What does ‘regular’ mean? Think aboutWhat is another name for a regular triangle?What is another name for a regular quadrilateral?
Key words regular parallel perpendicular circle trianglesscalene isosceles equilateral acute-angled right-angled obtuse-angled quadrilaterals parallelogram trapezium rhombus rectangle square kite other polygons pentagon hexagon octagon
Geometrical design At the end of the activity Name the different types of triangles. Name each special type of quadrilateral. List their properties. What does the term 'regular' mean? What is another name for a regular quadrilateral? What types of jobs involve using geometrical shapes? List as many as you can.