- ____, are you Ben?
- No, I'm not. I'm Peter.
A:How are you
B:Hi
C:Excuse me
D:Thanks
若∠A=50°,则∠BIC=115°=90°+ 50°2 ;
若∠A=90°,则∠BIC=135°=90°+ 90°2 ;
若∠A=130°,则∠BIC=155°=90°+ 130°2 ;
下列式子变形是因式分解的是( )
We __________a great time at the party last night.