Which equation is correct regarding the measure of ∠1?
m∠1 = (a – c)
m∠1 = (a + c)
m∠1 = (b – d)
m∠1 = (b + d)

Sam hated the long nights of winter! his mother called him in from playing so early: around 4: 30 pm! it is usually dark out when sam is eating supper. what letter represents the long nights where sam lives? a) a. b) b. c) c. d) d.