Hello, today in class we made a triangle out of three strips of paper and held them together by push-pins. After we held the triangle up and it didnt change its shape. For homework I have to write down three sentences on why triangles dont change their shape.; Hello, today in class we made a triangle out of three strips of paper and held them together by push-pins. After we held the triangle up and it didnt change its shape. For homework I have to write down three sentences on why triangles dont change their shape.
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