Explanation:
Angle b and the one that's 70º are vertical angles, so they are congruent.
Angles b and g are corresponding angles. They are congruent.
Angles g and e are vertical angles. They are congruent.
Angles a and b are supplementary - their measures add up 180º:
[tex]\begin{gathered} m\angle a+m\angle b=180º \\ m\angle a=180º-70º \\ m\angle a=110º \end{gathered}[/tex]
Angles a and d are corresponding angles. They are congruent.
Angles c and a are vertical angles. They are congruent.
Angles d and f are vertical angles. They are congruent.
Answers:
• m∠a = 110º
,
• m∠b = 70º
,
• m∠c = 110º
,
• m∠d = 110º
,
• m∠e = 70º
,
• m∠f = 110º
,
• m∠g = 70º
