Question

помогите пожалуйста !

Answer 1

Ответ:

$\angle A=70^\circ \ \ \to \ \ \ \angle D=180^\circ -70^\circ =110^\circ \\\\\angle (BO,AC)=90^\circ \\\\\angle (DB,AB)=\angle (DB,DC)=110^\circ :2=55^\circ \\\\\angle (AC,DA)=180^\circ -35^\circ =145^\circ \\\\\angle (OA,BA)=90^\circ -55^\circ 35^\circ \\\\\angle (DA,AB)=\angle (DA,DC)=110^\circ \\\\\angle (BC,DO)=180^\circ -55^\circ =125^\circ$