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[@user-zy1rw6yb9p]

Tanks for watching this video

[@AmirgabYT2185]

S=4

[@tooltroll]

The lower green triangle spins 180 degrees to fit in the space left by the other green area, filling a 2x2 square, area = 4. Took longer to type it than see it.

[@santiagoarosam430]

El trapecio verde superior podemos girarlo 180º en torno al punto medio de la frontera Blanco\Verde y llenará la zona blanca del cuadrado inferior derecho de la figura→ Área verde =2*2=4 ud².
Gracias y un saludo cordial.

[@prossvay8744]

Green area=(2)(2)-1/2(2)(3/2)+1/2(2)(3/2)=4 square units.❤

[@Birol731]

My way of solution is ▶
for the small white triangle in the upper square: ΔABC
the large triangle that is located in the two squares (upper and lower): ΔADE
ΔABC ~ ΔADE
BC/DE= AB/AD
BC= 1+x
DE= 1+2
AB= 2
AD= 2+2= 4
⇒
(1+x)/(1+2)= 2/(2+2)
(1+x)/3= 2/4
4x= 2
x= 2/4
x= 1/2 length units
Agreen= (2+1/2)*2/2 + (1+1/2)*2/2
Agreen= 5/2 + 3/2
Agreen= 4 square units

[@withnailworld4725]

That's quite a long way to do it.