Can y’all help me on Thai thank you

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

1. what is the measure of ∠abc? what is the measure of ∠abd?

Me answer this question: -2/3p + 1/5 - 1 + 5/6p i think the simplified expression is 1/6p - 4/5 correct me if i'm wrong, and explain it! if i have it right, just tell me. you so