1. straight line   gerade Gerade   flach   Prisma   Viereck   Hint Half-n-half Clue   2. perpendicular lines   Hemisphäre   gerade Gerade   Senkrechtlinien   Prisma   Half-n-half Clue   3. ray   Strahl   Ellipse   Pentagon   flach   Half-n-half Clue   4. plane   Ellipse   flach   Konvex   Pentagon   Half-n-half Clue   5. quadrangle   Viereck   Gipfel   Prisma   Pentagon   Half-n-half Clue   6. ellipse   Hexagon   oval   Ellipse   Pentagon   Half-n-half Clue   7. heptagon   heptágono   Pyramide   Konkav   Viereck   Half-n-half Clue