9514 1404 393
Answer:
50 square units
Step-by-step explanation:
The outside square is 10 units on each side. If you fold the figure along each side of the shaded square, you find the white triangles exactly fill the shaded area. That means the shaded area is equal to the white area, so the shaded square is half the total area of 10×10 = 100 square units.
The shaded area is 50 square units.
