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All the sides of a scalene triangle are different lengths. (Scalene sounds like skay-leen.) Equilateral and isosceles triangles are a bit special because they have some sides the same length as each other, but a scalene triangle is just any old triangle. Any triangle that is not isosceles or equilateral is scalene.
Play with the triangle to the right. Can you make it wide and flat? What about tall and narrow? How about making one lop-sided.
You can make any kind of triangle here ... including equilateral and isosceles triangles!
Draw some of the scalene triangles you made. Don't forget to label your drawings "Scalene triangles". (If you made any isosceles or equilateral triangles, don't draw them ... only the scalene ones.)
Once you've explored all three types of triangles, have a look at the other ideas page.
Copyright Glen Prideaux,
2002.
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