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

Answer:
a kite
Step-by-step explanation:
because the question asks what special quadrennial is formed by connecting the midpoints
Answer:
yeah 13 is the right answerrrrr
The answer is b so mark it down
Answer:
5 = 1/4c
Step-by-step explanation: