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Equilateral Triangle #2

Move points A and B to adjust the triangle. In Geometry, Greek letters () are used for angles.

Questions

1. What do you notice about the sides? 2. What do you notice about the angles? 3. The word "lateral" refers to "side". Why is the term "equilateral" appropriate for this triangle? 3. Why is an equilateral triangle also known as "equiangular"? 4. Look up the definition of "regular polygon". Why is this type of triangle also known as a "regular triangle"?