Web-based Student Activities

Everything Geometry

Classifying Triangles by Sides

Students should be able to:

  • classify and describe triangles by using their properties; e.g. angle measures, congruent angles/sides.

Scalene Triangles

  • No sides congruent
  • No angles congruent
scalene triangle

More on Scalene Triangles

  • Though the angles all have different measures, they still must add up to 180 degrees.
  • To show that a triangle is isosceles, we use the following symbols:
scalene triangle


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