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# 1 34 Symmetry

## by mc director, Teach, Tech, Library at School on Nov 02, 2009

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## 1 34 SymmetryPresentation Transcript

• Symmetry
• Title new sheet:
Symmetry
Date: 10/15/09
Get a calculator
Today’s Lesson:
• Check Assignment:
• Check Assignment:
• Check Assignment:
• Work one problem from the other side.
More Problems:
• When does a shape or pattern have a line of symmetry?
EQ:
• When does a shape or pattern have a line of symmetry?
EQ:
• Line of symmetry
Figure can be folded into two congruent parts.
vocabulary:
• A figure can have more than one line of symmetry
line of symmetry:
• Line of symmetry:
• Line of symmetry:
• Hand out figures to look for lines of symmetry.
Use dotted lines
vocabulary:
• Clockwise
Counter-Clockwise
vocabulary:
• Rotational symmetry
Figure rotates onto itself in less than a full rotation
vocabulary:
• How many times will each figure rotate?
vocabulary:
• Diagonal
Line connecting any two corners (vertex) not adjacent.
vocabulary:
• Diagonal:
• Draw diagonals.
Use solid lines.
vocabulary:
• chart
Assignment:
• When does a shape or pattern have a line of symmetry?
EQ:
• Warmups
Model Drawing
Assignment: