Property 1
\(d_1\parallel d_2\)
1.
\(d_1\parallel d_2\)
\(\Rightarrow \alpha=?\)
2.
\(d_1\parallel d_2\)
\(\Rightarrow x=?\)
3.
\(d_1\parallel d_2\)
\(\Rightarrow \alpha=?\)
Property 2
\(d_1\parallel d_2\)
\(\Rightarrow\alpha+\beta=180^\circ\)
1.
\(d_1\parallel d_2\)
\(\Rightarrow \alpha=?\)
2.
\(d_1\parallel d_2\)
\(\Rightarrow \alpha=?\)
3.
\(d_1\parallel d_2\parallel d_3\)
\(\Rightarrow \alpha=?\)