Page 27 - 新思维数学学生用书5 样章
P. 27
2 2D shape and pattern
Worked example 2
How many lines of symmetry does this pattern have?
Is there a vertical line of symmetry? Place a small mirror exactly through the
middle of the pattern vertically.
Does the pattern have one side that exactly
mirrors the other?
No, the colours are different.
Is there a horizontal line of symmetry? Place a small mirror exactly through the
middle of the pattern horizontally.
Does the pattern have one side that exactly
mirrors the other?
No, the colours are different.
26
