Objectives: Find co-ordinates of points determined by geometric information. Understand and use the...
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Transcript of Objectives: Find co-ordinates of points determined by geometric information. Understand and use the...
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:
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Rhombus?
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Move one square only: horizontal line of symmetry
Move one square only:Vertical line of symmetry
Move one square only:
diagonal, vertical and horizontal lines of symmetry
Move one square only:
no lines of symmetry
Add two more squares to make the red line a line of symmetry:
Add two more squares to make the red line a line of symmetry:
A B
C
D
E F
Which triangles are reflections of triangle A?
A B
C
D
E F
B is a reflection of A
A B
C
D
E F
C is not a reflection of A
It is a rotation of A
A B
C
D
E F
D is a reflection of A
A B
C
D
E F
E is not a reflection of A.
It is a translation (slide).
A B
C
D
E F
F is a reflection of A
A B
C
D
E F
Are any of the other triangles reflections of each other?
D is reflection of E ( or vice versa)
Thank you for your attention