Tool: Postulate Identifier
Toggle the pairs your diagram marks congruent. The tool tells you whether SSS, SAS, ASA, AAS, or HL applies — or warns you about SSA and AAA.
Marked pairs
Toggle each pair of corresponding parts your diagram marks congruent.
Side pairs marked
Angle pairs marked
Is the marked angle BETWEEN the two marked sides?
Is the marked side BETWEEN the two marked angles?
What you marked
The diagram updates as you toggle pairs.