Problem 93: Triangle or Square?

Math Pics 4: Pentagonal Totals

I saw this on Twitter. It is an amazing work. The total of numbers on each side of the pentagon is equal to each other.

Problem 34: Polygon Area Ratio

There is square inside of a regular octagon. 

What is the ratio of 'Area of triangle KLC' to blue area?

Quadrilaterals in Hexagon

The following figure is made of hexagons that are drawn in each other. 





How many different quadrilaterals (4-sided shape) in any kind and size can you count on the given figure?

a. Less than 40
b. Between 40 and 60
c. Between 60 and 80
d. Between 80 and 100
e. More than 100