Question

已知：如圖，AB∥CD，EF交AB于G，交CD于F，FH平分∠EFD，∠EFD=100⁰

求：∠AHF，∠AGE的度數。（10分）

Answer 1

解：∵FH平分∠EFD，∠EFD=100⁰
                                                                                                 
                                ∴∠EFH=∠HFD=∠EFD=50⁰
                                                                                                  ∵AB∥CD
∴∠AHF=∠HFD=50⁰
                                                                                                             ∠AGE=∠CFE
∵∠CFE=180^0——∠EFD=80⁰
∴∠AGE=80⁰解析:
略