Kamp '13 - Angle Chasing 5.
Dodao/la:
arhiva3. studenoga 2013. Neka je
![O](/media/m/9/6/0/9601b72f603fa5d15addab9937462949.png)
središte opisane kružnice, a
![D](/media/m/7/0/0/7006c4b57335ab717f8f20960577a9ef.png)
nožište visine na
![BC](/media/m/5/0/0/5005d4d5eac1b420fbabb76c83fc63ad.png)
u trokutu
![\triangle ABC](/media/m/1/f/3/1f3c3c0f3e134a169655f9511ba6ea82.png)
. Dokažite
![BAD = \angle OAC](/media/m/9/b/0/9b0f96abb118f765917a29d7f9099637.png)
.
%V0
Neka je $O$ središte opisane kružnice, a $D$ nožište visine na $BC$ u trokutu $\triangle ABC$. Dokažite $BAD = \angle OAC$.
Izvor: Kamp 2013. - Angle Chasing, L. V.