mth 319a mth 419a symmetry line symmetry rotation (turn) symmetry translational symmetry creating...
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Line Symmetry
How many lines of symmetry do these shapes have ?
Square (4 lines)Equilateral Triangle (3 lines)

Line Symmetry
How many lines of symmetry do these shapes have ?
Rectangle (2 lines)Isosceles Triangle (1 lines)

Line Symmetry
How many lines of symmetry do these shapes have ?
Kite (1 line)Rhombus (2 lines)

Line Symmetry
How many lines of symmetry do these shapes have ?
Parallelogram No lines of Symmetry

Line Symmetry
How many lines of symmetry do these shapes have ?
Trapezium 1 (1 line)Trapezium 2No line of Symmetry

Line Symmetry
How many lines of symmetry do these shapes have ?
Hexagon (6 lines)(2 lines)

Line Symmetry
Draw the other side of the shape so it has line symmetry.

Line Symmetry
Draw the other side of the shape so it has line symmetry.
MTH 319aMTH 419a
*Created by Mr. Lafferty Maths Dept.Now try TJ3bEx 1
Ch11 (page 105)www.mathsrevision.comLine Symmetry
MTH 319aMTH 419a
Starter Questionswww.mathsrevision.comQ1.Round the following to the first decimal place.Q2.What fraction is the green area. What fraction is the grey area.Q3.A pencil costs 22p. How much doesa 1000 cost. Put your answer in s.(a) 153.37(b)261.55
MTH 319aMTH 419a
www.mathsrevision.comLearning IntentionSuccess CriteriaUnderstand the terms rotational symmetry.We are learning what rotational symmetry and its order. Rotation (Turn) Symmetry 2. State the turn symmetry and order for shapes.

Rotation (Turn) Symmetry
Draw the other side of the shape rotated through 180o around the red point.
This new shape has halfturn symmetry ORDER 2.
Order 2 means it looks the same twice as it is rotated through 360o.

Rotation (Turn) Symmetry
State the turn symmetry for each and its order.
Square ( turn symmetry)Order 4Rectangle ( turn symmetry)Order 2
MTH 319aMTH 419a
*Created by Mr. Lafferty Maths Dept.Now try TJ3bEx 2
Ch11 (page 107)www.mathsrevision.comRotation (Turn) Symmetry
MTH 319aMTH 419a
Starter Questionswww.mathsrevision.comQ1.CalculateQ4.Find the perimeter and area of the square.Q3.Q2.What is the time difference between 8.15am and 1:00pmQ5.Find the order of rotational symmetry for the shape opposite.5cm132456A=25cm2P=20cm
MTH 319aMTH 419a
Creating HalfTurnSymmetrywww.mathsrevision.comLearning IntentionSuccess CriteriaUnderstand the terms halfturn symmetry.We are learning how we can create halfturn symmetry for a shape. Draw the other half of a shape such that it has halfturn symmetry.

Creating Half Turn Symmetry
Draw the other side of the shape rotated through 180o around the red point.
The final shape depends on the centre of rotation.

Creating Half Turn Symmetry
Draw the other side of the shape rotated through 180o around the red point.
MTH 319aMTH 419a
*Created by Mr. Lafferty Maths Dept.Now try TJ3bEx 3
Ch11 (page 110)www.mathsrevision.comCreating HalfTurn Symmetry
MTH 319aMTH 419a
Starter Questionswww.mathsrevision.comQ1.CalculateQ4.(2) + (3)Q3.Q2.What is the time difference between 8.15am and 1:00pmQ5.How many lines of symmetry doesregular hexagon have.
MTH 319aMTH 419a
Translation (slide)Symmetrywww.mathsrevision.comLearning IntentionSuccess CriteriaUnderstand the terms translational, slide congruent and tile.We are learning the meaning of Translational (slide) symmetry using tile patterns. Identify shapes that tile.Construct a tile pattern for shapes.

Translation (Slide) Symmetry
A shape that tiles can be completely surrounded by congruent shapes WITHOUT leaving any gaps.
Using Slide SymmetryShape tilesDOES NOT tilesGaps between shapesGapsGaps

Translation (Slide) SymmetryHow can you tell if the tiling is complete ?

Translation (Slide) Symmetry

Translation (Slide) SymmetryIs this the complete tiling ?No !Why ?Complete the tiling
MTH 319aMTH 419a
www.mathsrevision.comTranslation (slide) SymmetryWrite down as many tile patterns as you canthat you see every day.
MTH 319aMTH 419a
*Created by Mr. Lafferty Maths Dept.Now try TJ3bEx 4
Ch11 (page 112)www.mathsrevision.comTranslation (Slide) Symmetry
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