1. Rechteck   rectangle   side   circle   point   Hint Half-n-half Clue   2. Durchmesser   side   diameter   triangle   circle   Half-n-half Clue   3. Kurve   semicircle   curve   circle   volume   Half-n-half Clue   4. Volumen   square   rectangle   semicircle   volume   Half-n-half Clue   5. Halbkreis   semicircle   circumference   cylinder   circle   Half-n-half Clue   6. Sphäre   sphere   circle   diameter   area   Half-n-half Clue   7. Umkreis   triangle   side   radius   semicircle   Half-n-half Clue