In Circle YmAD = 68° and mBC = 156. Find mZ1

m<1 = 112°

Step-by-step explanation:

Given:

Arc BC = 156°

Arc AD = 68°

Required:

m<1

Solution:

m<1 = ½(arc BC + arc AD) => based on intersecting chords angle measure theorem

Substitute

m<1 = ½(156° + 68°)

m<1 = ½(224)

m<1 = 112°

c. side angle side. u shares the same sides