Page 32 - 新思维数学学生用书5 样章
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2 2D shape and pattern
Check your progress
1 Draw an isosceles triangle with one side that is longer than the other two sides.
2 Which of these triangles are equilateral?
A B C
D E
3 Which types of triangle can be used to make a tessellating pattern?
4 How many lines of symmetry does an equilateral triangle have?
5 Here are two patterns.
How many lines of symmetry does each pattern have?
a
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