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Objectives: Find co-ordinates of points determined by geometric information. Understand and use the language and notation of reflections. Recognise.

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Presentation on theme: "Objectives: Find co-ordinates of points determined by geometric information. Understand and use the language and notation of reflections. Recognise."— Presentation transcript:

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3 Objectives: Find co-ordinates of points determined by geometric information. Understand and use the language and notation of reflections. Recognise transformation and symmetry of a 2-D shape: reflection in given mirror lines and line symmetry. Vocabulary:

4 x y

5 x y

6 y x Rhombus?

7 x y

8 x y

9 x y

10 x y

11 x y

12 Move one square only: horizontal line of symmetry

13 Move one square only: Vertical line of symmetry

14 Move one square only: diagonal, vertical and horizontal lines of symmetry

15 Move one square only: no lines of symmetry

16 Add two more squares to make the red line a line of symmetry:

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18 A B C D E F Which triangles are reflections of triangle A?

19 A B C D E F B is a reflection of A

20 A B C D E F C is not a reflection of A It is a rotation of A

21 A B C D E F D is a reflection of A

22 A B C D E F E is not a reflection of A. It is a translation (slide).

23 A B C D E F F is a reflection of A

24 A B C D E F Are any of the other triangles reflections of each other? D is reflection of E ( or vice versa)

25 Thank you for your attention


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