answer: 15
step-by-step explanation:
add an image
answer: this is not a question
step-by-step explanation: this is a answer
m∠5 + m∠3 = m∠1 is true.
m∠5 + m∠6 = 180 is true
m∠2 +m∠3 = m∠6 is true
m∠2 +m∠3 +m∠5 = 180 is true