A statement which appears to be true but has not been proven to be so, is a postulate.
None; because there is no justification for assuming that the two triangles (or trangles, as you prefer to call them) are similar.
similar - SAS
Euclid's second postulate allows that line segment to be extended farther in that same direction, so that it can reach any required distance. This could result in an infinitely long line.
The line intersection postulate states that if two distinct lines intersect, they do so at exactly one point. This fundamental principle in geometry ensures that the intersection of lines is unique, meaning that no two lines can cross at more than one point. This postulate forms the basis for understanding the relationships between lines in a plane.
Might not be congruent
OK, so know your alphabet. Very good. How fast can you say it backwards?
SAS
not congruent
Congruent - SAS
congruent - asa
Congruent - SSS
similar - AA
not congruent
yes
APEX Congruent-SAS
A statement which appears to be true but has not been proven to be so, is a postulate.