Question

Va rog frumos ex. 1,2 si 3 !!!!!!

Answer 1

1.

a) alungit

b) nul

2. ∡AOB, ∡BOC, ∡COD, ∡DOE, ∡AOC, ∡BOD, ∡COE, ∡AOD, ∡BOE

3.

∡ADB, ∡ABD

∡BDC, ∡DBC

∡BAD, ∡BCD