Neka je
![ABCDEF](/media/m/9/f/e/9fe205b534135e3a700ffb54d8b96cb0.png)
pravilni šesterokut sa središtem
![O](/media/m/9/6/0/9601b72f603fa5d15addab9937462949.png)
. Neka su
![M](/media/m/f/7/f/f7f312cf6ba459a332de8db3b8f906c4.png)
i
![N](/media/m/f/1/9/f19700f291b1f2255b011c11d686a4cd.png)
polovišta stranica
![\overline{CD}](/media/m/3/3/8/338870e40f3ea7992d83158230115a5f.png)
i
![\overline{DE}](/media/m/f/f/1/ff1151be8c83f905b39371ec47cb7144.png)
, a
![L](/media/m/f/c/1/fc1ae4eb78da7d1352cbf1f8217ab286.png)
točka presjeka pravaca
![AM](/media/m/9/2/1/921d54bb92ada2d2120b2591b722ea12.png)
i
![BN](/media/m/9/2/3/923313310d49dd4405c2a3573960a679.png)
. Dokažite:
![(a) P(ABL) = P(DMLN)](/media/m/7/c/e/7ce5afe0e3b48e13d0c5ea046189ce02.png)
;
![(b) \angle ALO = \angle OLN = 60^\circ](/media/m/7/3/9/7396d84eb55c77216e5d9f30b4aac871.png)
;
![(c) \angle OLD = 90^\circ](/media/m/b/1/8/b18ad57e2d701dd18c6c8b8e28d70b02.png)
.
%V0
Neka je $ABCDEF$ pravilni šesterokut sa središtem $O$. Neka su $M$ i $N$ polovišta stranica $\overline{CD}$ i $\overline{DE}$, a $L$ točka presjeka pravaca $AM$ i $BN$. Dokažite:
$(a) P(ABL) = P(DMLN)$;
$(b) \angle ALO = \angle OLN = 60^\circ$;
$(c) \angle OLD = 90^\circ$.