Equilateral Triangle #2

Move points A and B to adjust the triangle.[br][br]In Geometry, Greek letters ([math]\alpha,\beta,\gamma[/math]) are used for angles.
Questions
1. What do you notice about the [color=#0000ff][b]sides[/b][/color]?[br][br]2. What do you notice about the [b][color=#ff00ff]angles[/color][/b]?[br][br]3. The word "[b][color=#0000ff]lateral[/color][/b]" refers to "side". Why is the term "[color=#0000ff][b]equilateral[/b][/color]" appropriate for this triangle?[br][br]3. Why is an equilateral triangle also known as "[color=#ff00ff][b]equiangular[/b][/color]"?[br][br]4. Look up the definition of "[color=#38761d][b]regular polygon[/b][/color]". Why is this type of triangle also known as a "[b][color=#38761d]regular triangle[/color][/b]"?
– Carolee Armour, Terry Lee Lindenmuth

Information: Equilateral Triangle #2