Flower Petal Study #4 - Layered Flowers 

Make a layered flower.
If even number, only one flower is made. For odd number petals, the number of petals is divided by 2 (remainder is not used) to produce the number of layers.

This code generates simple, symmetrical flowers by placing each petal around a circle. It uses the formula turn = ((n−2) × 180) ÷ n to calculate the interior angle of a regular polygon with n sides. This ensures that each petal is evenly spaced and fits between two points on the circle for any n-sided petalled flower.