4-1 Isosceles Triangle Thm: If 2 sides of a triangle are congruent, then the angles opposite those sides are congruent.
Thm 4-2: The bisector of the vertex angle of an isosceles triangle is the perpendicular bisector of the Base.
Thm 4-3: Converse of an Isosceles Triangle Thm.If 2 angles of a triangle are congruent, then the sides opposite them are congruent.
Corollary to Thm 4-1: If a triangle is equilateral, then it is equiangular.
Corollary to Thm 4-3: If a triangle is equiangular, then it is equilateral.
What is the Corollary to Them 4-1?
If a triangle is equilateral, then it is equiangular. a>