CH4 Angles

Obtuse

Straight

Acute

Right

120 $\degree$

90 $\degree$

180 $\degree$

150 $\degree$

 $\angle A_4=30\degree$   

 $\angle A_4=50\degree$  

 $\angle A_4=90\degree$  

 $\angle A_4=60\degree$  

 $\angle A_2=30\degree$  

 $\angle A_2=90\degree$  

 $\angle A_2=120\degree$  

 $\angle A_2=150\degree$  

$110\degree$

$112.5\degree$

$114.5\degree$

$115\degree$

 $\angle Q_6=50\degree$  

 $\angle Q_6=65\degree$  

 $\angle Q_6=55\degree$  

 $\angle Q_6=60\degree$  

 $\angle Q_3=55\degree$  

 $\angle Q_3=60\degree$  

 $\angle Q_3=50\degree$  

 $\angle Q_3=65\degree$  

Bisector

Perpendicular bisector

Bisector

Perpendicular bisector

Bisector

Perpendicular bisector