Mya claims (m∠3 + m∠4) = m∠1, as shown in the triangle below.



Which equations explain why Mya's claim must be true?

A) (m∠1 + m∠2) = 90° and (m∠3 + m∠4) = 90°
B) (m∠1 + m∠2) = 180° and (m∠3 + m∠4) = 180°
C) (m∠1 + m∠2) = 90° and (m∠3 + m∠4 + m∠2) = 90°
D) (m∠1 + m∠2) = 180° and (m∠3 + m∠4 + m∠2) = 180°

New Jersey Student Learning Standard: NJSLS 8.G.A.5
Grade 8 Mathematics Reference Sheet