Horizontal and vertical reflection.PNG

Main Ideas

1. What is reflection?

2. Geogebra - Reflection
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3. My Geogebra - Koru for Reflection in x and y axes

Reflection of the Koru in the mirror line (y axis)
Reflection in y axis.jpg

Reflection of the Koru in the mirror line (x axis)
Reflection in x axis.jpg

Multiple Reflections of the Koru in the mirror lines (x and y axes)

Multiple Reflections.jpg

  • reflection
  • object e.g. ABC
  • image e.g. A'B'C'
  • mirror line
  • y-axis
  • x-axis
  • invariant
  • orientation
  • axis of symmetry
  • vertical reflection
  • horizontal reflection

Use the online maths dictionary and write definitions of the words above when doing a reflection.Link to Online Maths Dictionary http://www.amathsdictionaryforkids.com/dictionary.html
Note: It is important when describing a reflection to refer to the location of the mirror line (which must also be shown).

Watch the Youtube below then do the following exercise.

  1. Click on the links below to see photos of kowhawhai on picasa.
  2. Find the mirror line in the following.
  3. Is it a horizontal or vertical reflection or both?
  4. Describe the reflection using the correct language.

1. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075730637429295570
2. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729318874335282
3. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729756960999570
4. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729756960999602
5. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729761255966914
6. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729963119429858
7. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729967414397186


Horizontal Reflection.PNG