Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 À propos
Hypothèses
  • AB || DF;
  • CB || EF;
  • m∡ABC = 32°.
Question
  • Montre que m∡DFE = 32°
Affirmations
Justifications
∠BAC ≅ ∠FDE
∠ACB ≅ ∠DEF
∆ABC ∼ ∆DFE
m∡DFE = m∡ABC = 32°