Answer:
(C) m∠2=m∠1
(D) m∠1=75°
Step-by-step explanation:
From the given statement, we have a line a is parallel to line b and m is the transversal.
Thus, using the property of straight line, we get
[tex]{\angle}1+105^{\circ}=180^{\circ}[/tex]
⇒[tex]{\angle}1=75^{\circ}[/tex]
Now, since [tex]{\angle}1[/tex] and [tex]{\angle}2[/tex] are the corresponding angles, thus are congruent.
Hence, [tex]{\angle}1={\angle}2=75^{\circ}[/tex]
Again, using the straight line property, we get
[tex]{\angle}2+{\angle}3=180^{\circ}[/tex]
[tex]{\angle}3=75^{\circ}[/tex]
Therefore, option (C) and (D) are correct.