no.5
Knowing 360° is the total angle of the polygon, I divided the polygon into 2 equal parts horizontally. Thus, the two parts has it's own unknowns X and <G, respectively.
360° = 180 + 180
1st Half:
180° = 48° + 45° + X
X = 180° - 93°
X = 87°
2nd Half:
180° = 85° + 58° + <G
<G = 180° - 143°
<G = 37°
Sorry, medyo komplikado.
