What is a decangon?

What are the answers to everyday math 5th grade study link 9.1? How many right angles does a w have? If X divided by 17.91 equals 14.90 what is x? Who was the Hellenistic mathematician who invented geometry? Is the percent of ocean on earth 70 percent or 75 percent? Does a plane containing two points of a line always never or sometimes contain the entire line? What is double 256? What units do you use for circumference? What is the gasoil ratio? How many times is the word 'mind' mentioned in the Bible? What is the perimeter of 5 and one six inches? When you multiply a prime and a composite number do you always get a composite number? What is the area of Ifo? What fraction is equivalent fraction for 12 24? How many decilitres are in a hectolitre? What is 20 divided by 23? Would the same methods work if both the numbers were positive? Witch polyhedra has 12 regular pentagons as faces? How many adult tickets were sold that day At the movie theatre child admission is $5.60 and adult admission is $9.90 on Tuesday 172 tickets were sold for a total sales of $1290.00.? Bought something for 600 dollars and it was 80 percent off What is the orignial price?