The horizontal angle is equal to []; the perimeter angle is equal to []; 1 ° = [] ', 1' = [] '; 1' = [] '; 1' = [] '

The horizontal angle is equal to []; the perimeter angle is equal to []; 1 ° = [] ', 1' = [] '; 1' = [] '; 1' = [] '

The horizontal angle is equal to [180 °]; the perimeter angle is equal to [360 °]; 1 ° = [60] ′, 1 '= [1 / 60] °; 1' = [60] ′; 1 '= [1 / 60] ′