there are 4 types of congruence theorem-: ASA,SSS,RHS,SAS
the congruence theorems or postulates are: SAS AAS SSS ASA
SSS
SSS is enough to show congruence.
Congruent - SSS
no sss and sas do
It is a special case of:the 3 sides (SSS) congruence, using Pythagoras,the 2 sides and included angle (SAS) congruence, using the sine rule.
true
No, the side-side-angle in congruence shortcut DOESN'T exist..hint-SSA turns backward--->ASS<---thats the problem of no word will come on math..kinda funny to laugh about but SSA=GET rid off it! use SSS, SAS, ASA, SAA, SSS, and AAA.
Here is the answer to your query. Consider two ∆ABC and ∆PQR. In these two triangles ∠B = ∠Q = 90�, AB = PQ and AC = PR. We can prove the R.H.S congruence rule i.e. to prove ∆ABC ≅ ∆PQR We need the help of SSS congruence rule. We have AB = PQ, and AC = PR So, to prove ∆ABC ≅ ∆PQR in SSS congruence rule we just need to show BC = QR Now, using Pythagoras theorems in ∆ABC and ∆PQR Now, in ∆ABC and ∆PQR AB = PQ, BC = QR, AC = PR ∴ ∆ABC ≅ ∆PQR [Using SSS congruence rule] So, we have AB = PQ, AC = PR, ∠B = ∠Q = 90� and we have proved ∆ABC ≅ ∆PQR. This is proof of R.H.S. congruence rule. Hope! This will help you. Cheers!!!
The correct answer is the AAS theorem
they are all postulates or shortcuts on finding 2 triangles congruence, except that SAA does not exist.