Who invented heptagon?

How do u convert 0.0064 into a fraction in simplest form? What is figures that can have the same shape but not necessarily the same region figure? What word is defined by a series of ordered groupings of items within a system? How many 50cm x 50cm tiles to cover 8m x 30m? How do you calculate the multiplication factor of TOD meters? Why is zoroaster called a shadowy figure? How many 4 digit combinations are there for the numbers 0-5 without having the same numbers twice? What missing data means on school report card? Did they have doctors in the old days? What technology is useful in math class? What is the name of the shape with 5 equal sides? What do a quadrilateral and a hexagon have in common? What is the probability for rolling a number cube? Are there many formulas to calculate pi? What is the largest polygon and how many sides? What is the prime numbers of 33? How do you find out what i ordered and did not receive? How can you tell whether a triangle is unique? What is the LCM of 11 and 20? What book in the Bible is Leah talked about?