1. This means that two angles and its included sides of one triangle is equal to the
corresponding angles in included side of another triangle.
2. This means that the three corresponding sides of the two triangles have the same or
equal measure.
3. This means that the two triangles have two angle and non-included side equal.
4. This means that the two sides and an included angle of one triangle is equal to the
two sides and an included angle of another triangle.
5. Two triangles are
if they have a.) exactly the same three sides
and b.) exactly the same three angles.​