Answer:
60°
Step-by-step explanation:
m3 = m1 = m5 = 120°
m5 + m6 = 180°
120° + m6 = 180°
m6 = 180° - 120°
= 60°
The x value is the domain

Explanation:
Since we have given that
Speed at which Eugene walked all the way to school = 3 mph
After realizing that she forgot her math book, she ran back
Speed at which Eugene walked back to her house = 7 mph
Let the distance between her house and her school be x
According to question,

Hence,

No a polygon only has 3 sides and 3 angles.