Answer:
Given : s||t
Exterior sides in opposite rays : ∠5 and ∠7 are supplementary
Definition of supplementary angles : m∠5 + m∠7 = 180°
If lines are ||, corresponding angles are equal : m∠1 = m∠5
Substitution : m∠1 + m∠7 = 180°
Answer:
173.83
Step-by-step explanation:
17.4 * 9.99
173.826 ~ 173.83
PEMDAS
15-(37+8)/3
15-45/3
15-15
0
