Using deductive reasoning, complete the following. The sum of the angles of any quadrilateral is 360°

Question

In quadrilateral PQRS, m∠S=50°
Therefore...
A.m∠P+m∠Q+m∠S=310°

B.m∠P+m∠Q+m∠S=360°

C.m∠P+m∠Q+m∠R=360°

D.m∠P+m∠Q+m∠R=310°

Answer 1

sum of 4 ∠s = 360
S = 50, so
sum of P,Q,R + 50 = 360
now finish it off

Answer 2

What’s the answer? DAM

Answer 3

the answer is B