Question

determine if the two triangles are congruent. if they are, state the postulate or theorem that proves they are congruent.
a. sss
b. sas
c. asa
d. not enough information.

Explanation:

The triangles are △ABC and △DBC. From the diagram: AB ≅ DB (two tick marks), AC ≅ DC (three tick marks), and BC is a common side (≅ to itself). All three corresponding sides are congruent, so the SSS postulate applies.

Answer:

a. SSS