>>529830Nigga, you are right. There are at least 3 assumptions that are needed to calculate that.
Without any of them, it is imposible to solve it.
The most likely assumptions, according to the picture, are:
1) Both purple squares have a side length of X.
2) The green line pass through the centre of both squares (therefore it measures X * sqrt (2)).
3) The green line cuts the middle of both sides of the rotated square (therefore all 4 triangles at the corners have the same size).
Asumming that, the answers are:
b (red line) = X * (sqrt(2) – 1) / 2
p (yellow line) = X * sqrt (2) * (sqrt(2) – 1) / 2
A (triangle área) = X^2 * (sqrt(2) – 1)^2 / 4