First, here's an isosceles triangle, it has two equal length sides and two equal angles. Oh! Very clever! Now we have an equilateral triangle. Three sides of equal length andall the angles are 60 ...

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 ...

makes it easier to see how the inverse angles are complementary instead of complex-angled shapes like isosceles triangles. Geometry is like a puzzle with easy-to-follow rules that explain how to ...

divide the sum of interior angles in a triangle by 3 In an isosceles triangle, two of the sides are equal. This means two of the angles are equal. These are the base angles. The base angles are ...