Maggie Graham likes to draw diagonals in different figures. She drew a square. She drew in all the possible diagonals within the square. How many did she draw?

She drew another figure with a different number of sides. Then she drew in all the diagonals. She counted the diagonals and came up with a different number than the number she counted in the square. Maggie asked herself, “I wonder how many diagonals are in a hexagon?”
How do you know when you have found all the diagonal lines that you can draw in a figure?
Answer Page
Make sure to not only answer your question but explain how you know the solution.
1.How many diagonals are in a square?
2.How many diagonals are in a hexagon?