1927 18 nan (a) yalila polihedɔrɔn dɔ bɛiy wa min bɛ sɔn anisohedaral tilanin sigiyɔrɔma saba dɔrɔn dɛ la wa? (b) kulukutu tunin ɲɔgɔnkan jumɛ dɛ bugunin dɔ kɔjugu?