An isosceles triangle has two sides that are congruent ... the length of its sides and some information about its angles. You can combine this knowledge to classify the triangle.

Students may notice symmetry in the isosceles and equilateral triangles and non-symmetry in the scalene triangles Informal recognition of these properties may be helpful in recognizing formal ...

Students may notice symmetry in the isosceles and equilateral triangles and non-symmetry in the scalene triangles Informal recognition of these properties may be helpful in recognizing formal ...