Property 7
The interior angle bisectors are intersected at a point inside of the triangle.
1.
\(m\left(\widehat{BAC}\right)=70^\circ\)
\(\Rightarrow\alpha=?\)
2.
\(\Rightarrow\alpha=?\)
3.
\(\Rightarrow\alpha=?\)
Property 8
The exterior angle bisectors of two angle and interior angle bisector of the other angle intersected at a point outside of the triangle.
1.
\(\Rightarrow\alpha=?\)
2.
\(\Rightarrow\alpha=?\)
3.
\(\Rightarrow\alpha=?\)