How many verticles in a heptagons?

Is the horizontal change the differences in the x-coordinates when computing slope? What does the coin grade AU55 mean? What is 2fifths equal to in fraction? What is 400000 rounded to the nearest ten thousand what is the smallest and largest number? What is the opposite of Infinity? The line given by the equation y equals 5x minus 2 is perpendicular to what equation? Who studied in trigonometry? What is 7.8 rounded to one decimal place? What is the third multiple of eight? How many significant figures are in 3.05? 14 by 12 feet? Is the product of 8 positive and 3 negative numbers a positive or negative number? What is 7.18 in decimal form? Is 5.5 a prime number or a composite number? A pattern follows the rule Starting with 3 every consecutive line has a number two less than twice the previous line How many marbles must be in the fifth line? What is the difference between the greatest and the smallest numbers which are divisible by 8 and are formed by using the digits 2 4 and 6 each only once? Is it safe to use Hibiscrub every day for showering? What is the abbreviation for the present month? What is fish divided by two? What the heck is unit rate?