pls help find the probability of the shaded region

Question

here is a link to thee problem

https://drive.google.com/file/d/1lV2WaI6HYJXI8ITIrBSibUxe_ZRol70F/view?usp=sharing

PLEEASEEE HELP ASAP

Answer 1

1) Find the area of a shaded triangle:

Area = (1/2)·base·height

You know the lengths of the base and height because points A, B, C , and D are the midpoints of

each 4 unit long side. A midpoint splits a side exactly in half.

2) Since there are 4 congruent shaded triangles

Area of the shaded region = 4 x (Area of one shaded triangle)

3) P(shaded region) = (Area of shaded region) / (Area of 4x4 square) x 100%