What else must you know to prove the triangle congruent by sas
In addition to knowing the Side-Angle-Side (SAS) criteria, you need to know the following:
1. Side lengths: The lengths of the two sides that are being compared must be equal in both triangles.
2. Included angle: The angle between the two sides being compared must also be congruent in both triangles.
3. Corresponding positions: The sides and angles being compared must be in corresponding positions in both triangles. This means that the sides being compared must be opposite to the corresponding angles being compared.
4. Correct labeling: You must correctly label the corresponding sides and angles in both triangles for comparison.
By ensuring that these additional conditions are met, you can prove that the triangles are congruent using the SAS criteria.