На рисунке ∠3 = ∠5. Докажите, что: а) ∠4 = ∠6; б) ∠1 = ∠5; в) ∠3 + ∠6 =180°.

1) Past Simple.
Yesterday, I got a good mark.
2) Future Simple.
Tomorrow, I'll go to the cinema.
3) Present Simple.
I often go to school.