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goteachmaths.co.uk Combined Transformations – Complete Lesson

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1 goteachmaths.co.uk Combined Transformations – Complete Lesson
Delete unwanted slides. To print handouts: File>Print>Print Current Slide

2 Describe the transformations that map the shaded triangle to A, B, C & D
Translations – Vector Reflection – Mirror Line Rotation – Centre of Rotation + Angle + Direction Enlargement – Centre of Enlargement + Scale Factor A B D C

3 Describe the transformations that map the shaded triangle to A, B, C & D
A – Rotation around (0,1), 180°, clockwise, anti-clockwise. B – Enlargement. Scale factor 2, centre of enlargement (-2,-4) A C – Translation 4 2 ) ( B D – Reflection in 𝑥 = -1 D C

4 Describe the transformations that map the shaded triangle to A, B, C & D
A – Rotation around (0,1), 180°, clockwise, anti-clockwise. B – Enlargement. Scale factor 2, centre of enlargement (-2,-4) A C – Translation 4 2 ) ( B D – Reflection in 𝑥 = -1 D No animations. C

5 Handout for students.

6 Combined Transformations
01 December December 2018 Combined Transformations

7 𝒙=𝟎 How can we map (transform) A to B? Reflection? Translation?
Rotation? Enlargement? A combination? A B

8 𝒙=𝟐 𝒚=𝟏 How can we map (transform) A to C? Reflection? Translation?
Rotation? Enlargement? A A combination? 𝒚=𝟏 Reflection in 𝑥=2, then, reflection in 𝑦=1. C or Rotation, 180° around (2,1).

9 A X B G H C D F E Describe the single transformation that maps:
X to A: __________________________ X to B: __________________________ X to C: __________________________ X to D: __________________________ X to E: __________________________ X to F: __________________________ X to G: __________________________ X to H: __________________________

10 A A X B X B G G H H C C D D F F E E Describe the single transformation that maps: X to A: __________________________ X to B: __________________________ X to C: __________________________ X to D: __________________________ X to E: __________________________ X to F: __________________________ X to G: __________________________ X to H: __________________________ Describe the single transformation that maps: X to A: __________________________ X to B: __________________________ X to C: __________________________ X to D: __________________________ X to E: __________________________ X to F: __________________________ X to G: __________________________ X to H: __________________________ A5 handout to print.

11 Answers X to A: Translation X to B: Reflection in x = 5.5
X to C: Translation X to D: Reflection in y = 2 X to E: Rotation 180° clockwise around (3, -1) X to F: Reflection in the line y = -x X to G: Rotation 90 anticlockwise around (0, 0) X to H: Enlargement of scale factor 2, centre of enlargement (5, 8) 2 2 3 −4 X B G H C D F E Describe the single transformation that maps: X to A: __________________________ X to B: __________________________ X to C: __________________________ X to D: __________________________ X to E: __________________________ X to F: __________________________ X to G: __________________________ X to H: __________________________

12 A A A B B B T1) T2) T1) T2) T1) T2) A A B B B A T1) T2) T1) T2) T1)
How is each shape transformed from A to B? Pick only from those below. _________________ Reflected in 𝑦=0 Translation Reflected in 𝑥=0 Enlarged, SF = 2, (1, 4) Rotated 180° clockwise around (0,0) Rotated 90° anticlockwise around (2,3) Enlarged, SF = 3, (-5,-5) Translation −1 0 Translation Reflected in 𝑦=1 Translation −4 −1 Translated 0 −1 A A A B B B T1) T2) T1) T2) T1) T2) A A B B Worksheet to print B A T1) T2) T1) T2) T1) T2)

13 A5 Handout to print.

14 Answers A A A B B B T1) Reflected in 𝑦=0 T2) Translation −1 0
How is each shape transformed from A to B? Pick only from those below. _________________ Reflected in 𝑦=0 Translation Reflected in 𝑥=0 Enlarged, SF = 2, (1, 4) Rotated 180° clockwise around (0,0) Rotated 90° anticlockwise around (2,3) Enlarged, SF = 3, (-5,-5) Translation −1 0 Translation Reflected in 𝑦=1 Translation −4 −1 Translated 0 −1 Answers A A A B B B T1) Reflected in 𝑦=0 T2) Translation −1 0 T1) Reflected in 𝑥=0 T2) Enlarged, SF = 2, (1, 4) T1) Rotated 90° anticlockwise around (2,3) T2) Translated 0 −1 A A B B B A T1) Enlarged, SF = 3, (-5,-5) T2) Translation T1) Reflected in 𝑦=1 T2) Translation −4 −1 T1) Rotated 180° clockwise around (0,0) T2) Translation

15 Answers A A A B B B T1) Reflected in 𝑦=0 T2) Translation −1 0
How is each shape transformed from A to B? Pick only from those below. _________________ Reflected in 𝑦=0 Translation Reflected in 𝑥=0 Enlarged, SF = 2, (1, 4) Rotated 180° clockwise around (0,0) Rotated 90° anticlockwise around (2,3) Enlarged, SF = 3, (-5,-5) Translation −1 0 Translation Reflected in 𝑦=1 Translation −4 −1 Translated 0 −1 Answers A A A B B B T1) Reflected in 𝑦=0 T2) Translation −1 0 T1) Reflected in 𝑥=0 T2) Enlarged, SF = 2, (1, 4) T1) Rotated 90° anticlockwise around (2,3) T2) Translated 0 −1 A A B B B A T1) Enlarged, SF = 3, (-5,-5) T2) Translation T1) Reflected in 𝑦=1 T2) Translation −4 −1 T1) Rotated 180° clockwise around (0,0) T2) Translation

16 Check your success! I can enlarge a shape by a fractional scale factor. I am confident enlarging a shape by a fractional scale factor. I can describe enlargements with fractional scale factors.

17 Check your success! I can enlarge a shape by a fractional scale factor. I am confident enlarging a shape by a fractional scale factor. I can describe enlargements with fractional scale factors. Effort this lesson?


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