Changes

An [[equilateral triangle]] has three equal sides, and three 60º angles.

An [[equilateral triangle]] has three equal sides, and three 60º angles.

If a triangle is not one of the above, it is a [[scalene triangle]].  

If a triangle is not one of the above, it is a [[Scalene Triangle|scalene triangle]].  

==Congruence of triangles==

==Congruence of triangles==