Starting with 'perigon', drop and add letters to find another word, reshuffling as required. Question 10 will ask you for the link between them.
-1.Starting with PERIGON, and dropping one letter will give you which word, meaning 'someone who states a point of view'?
-2.Dropping one letter from the previous answer will give you which word, with the meaning 'to lie face downwards'?
-3.Lose another letter to discover which word, which can mean the same as 'unlocked'?
-4.Another lost letter, which will give you which word meaning 'a very long time'?
-5.One final lost letter to find which abbreviation for an Executive Order?
-6.Time to start adding now to find which alternative name for the Igbo tribe of Nigeria?
-7.Add another letter to discover the name of which scientist, who gave his name to a particle in physics?
-8.Add another letter to discover which word which means 'to haul with a tackle'?
9.Add a letter to discover which final word, which can mean dull or slow-witted?
-10.What mathematical term links perigon to the final word? This word has other definitions, including a viewpoint.