360°

180°

270°

90°

$\angle ABC$

$\angle ADB$

$\angle DBA$

$\angle BAD$

$\angle P\ +\ \angle T$

$\angle P\ +\ \angle A$

$\angle A\ +\ \angle T$

$\angle TAP\ +\ \angle ATP$

$35\degree$

$120\degree$

$60\degree$

$85\degree$

AB

AC

BC

B