Line symmetry.

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Presentation transcript:

Line symmetry

Line symmetry 1、Exactly the same on both sides. Think:what is the same? 1、Exactly the same on both sides. 2、Folded in half——the left and right sides are the same.

If there is a line that divides a figure into two halves that match exactly ,then the figure has Line symmetry. The line is called a line of symmetry.

Which picture has Line symmetry？ question 1： Which picture has Line symmetry？ A 甲

Which picture has Line symmetry？ F T T T 甲 T T T F

Can you find examples of line symmetry in your life? question 2： Can you find examples of line symmetry in your life?

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How to test the Line symmetry？

Question 3：which red line is showing the Line of symmetry?

Question 4：Can you draw the other half of the shape?

Question 4：Can you drow the other half of the shape?

Question 5： Can you make the line symmetry?

1、Can you test for Line symmetry？ Summary： 1、Can you test for Line symmetry？ 2、Can you make a picture with line symmetry?