human
Find missing angles using angles on a straight line What is the value of the angle marked \( \mathbf{\square} \) ? ![Image showing three vertices of a polygon. We do not see how many sides the polygon has. The angles shown are marked 20 degrees, 120 degrees and the third is marked with a square.]() \( 120^{\circ} \)
gpt
Thinks angles which look the same on diagram will be equal