What definition is dynamically being shown here?[br]Also, what 2 theorems from geometry are also dynamically being illustrated here?
Definition of an [color=#000000][b]ISOSCELES TRIANGLE[/b][/color]:[br]A triangle is said to be an isosceles triangle if and only if it has at least one pair of congruent sides. [br][br][b][color=#000000]Isosceles Triangle Theorem:[/color][/b][br]If two sides of a triangle are congruent, then the [color=#ff00ff][b]angles opposite those sides are congruent[/b][/color]. [br][br][color=#000000][b]Theorem: [/b][/color][br]The bisector of the [color=#1e84cc][b]vertex angle[/b][/color] of an isosceles triangle is the [b]perpendicular bisector[/b] of the isosceles triangle's base.