Pls help .

(when u get in the document its duplicated)

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x