What is shape with 18 edges?

What number go into 3180? What is a fraction equvalent to 0.25? What other n number of unit fractions can be found that sum to 1? What is one and three fourths as a percent? What 3-D shapes have a curved surface? Which method would be best for solving the system x 8y plus 5 and 3x - 2y 11? Is the adjusted sales price on a home appraisal the sale price? How much does a 9 3 7380 venlafaxine hydro-chloride 37.5 mg pill sell for? What is a line segment that connects two points on a circle? What is the common denominator for fractions three eighths add three fourths? What does 150 milliamps look like in decimal form? What are all ways to make 20 by multiplication? What similarities do all graphs of linear functions share? Write this rational number in decimal form negative 1 over 2? What is an antonym for the word oscilloscope? What is 20.687 round to the nearest hundredths? What is the percentage of 33 out of 42? 9 4 6 equals 6 what are the missing math symbols between the numbers? Using the digits 1 to 9 create two numbers multiplied together give you the highest number? What is five thousand three hundred ninety one times four hundred ninety two?