Big Idea – We can describe, measure, and compare spatial relationships ... Students may notice symmetry in the isosceles and equilateral triangles and non-symmetry in the scalene triangles Informal ...

Oh! Very clever! Now we have an equilateral triangle. Three sides of equal length andall the angles are 60 degrees. This is a scalene triangle. All the sides are different lengths and each angle ...

A scalene triangle has 3 sides of different lengths and 3 unequal angles. An isosceles triangle has 2 sides of equal length. The dashes on the lines show they are equal in length. The angles at ...