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Unit 7.5 Reflections and Line Symmetry 9F.notebook
April 15, 2014
Apr 9­11:21 AM
Taj Mahal in India
It was built by Mughal emperor Shah Jahan in memory of his third wife, Mumtaz Mahal. The Taj Mahal is widely recognized as "the jewel of Muslim art in India and one of the universally admired masterpieces of the world's heritage". Apr 9­3:58 PM
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Unit 7.5 Reflections and Line Symmetry 9F.notebook
April 15, 2014
Apr 9­3:59 PM
Pentagon ABCDE has one line of symmetry AG.
AG divides the pentagon ABCDE into two congruent parts.
The corresponding points on each side of the line of symmetry are equidistant from the line of symmetry.
Apr 9­4:00 PM
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Unit 7.5 Reflections and Line Symmetry 9F.notebook
April 15, 2014
The line of symmetry is also called:
• a line of reflection
• a mirror line
If the line of reflection is on of the sides of the shape the new image forms a larger shape.
Apr 9­4:00 PM
Apr 9­4:01 PM
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Unit 7.5 Reflections and Line Symmetry 9F.notebook
April 15, 2014
Apr 9­4:01 PM
Apr 9­4:03 PM
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Unit 7.5 Reflections and Line Symmetry 9F.notebook
April 15, 2014
B
A
C
D
Apr 9­4:06 PM
Apr 9­4:13 PM
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Unit 7.5 Reflections and Line Symmetry 9F.notebook
April 15, 2014
Apr 9­4:13 PM
The number of lines of symmetry in a regular polygon is equal to the number of vertices.
Ex.
Apr 9­4:15 PM
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Unit 7.5 Reflections and Line Symmetry 9F.notebook
April 15, 2014
This figure represents half of another shape. Create the final shape by constructing the missing half, given each of the following cases:
Apr 11­12:16 PM
Apr 11­12:18 PM
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Unit 7.5 Reflections and Line Symmetry 9F.notebook
April 15, 2014
Apr 11­12:18 PM
8