Page 22 - 新思维数学学生用书5 样章
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2.1 Triangles
2.1 Triangles
We are going to …
• learn the names and properties of different triangles
• sketch different triangles.
Triangles are very important polygons.
They are useful when studying other shapes in mathematics equilateral triangle
because all polygons can be broken down into triangles. isosceles triangle
Triangles are also used in architecture and building because scalene triangle
of their strong shape.
What buildings and structures have you seen that use triangles?
Describe them.
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