My guess is before the current date but not sure hope that helped and sorry I could not do more and always good luck
First we find the measurement of dark dot .
ANd for that we have to use the formula of the angle formed by the intersection of chord .
Let the dark dot be t.
So we have

t and z are linear pair and sum of angles of linear pair =180 degree.
So we get

Step-by-step explanation:
ig this is 29 .............
The greatest common factor is 2
Answer:
w is the length
Step-by-step explanation:
length squared is always the area of a square