Answer:
Step-by-step explanation:
# angle ABC is congruent to angle DEF which’s given
# angle GHI is congruent to DEF which’s given
#angle DEF is congruent to DEF / symmetric property
# angle ABC is congruent to GHI / transitive property
(ABC+DEF=DEF+GHI)
- SUBTRACT DEF from both sides
ABC=GHI
