the third angle is 19.5°
Explanation:∠G = 33.5°
∠ H = 127°
∠ F = ?
∠G + ∠H + ∠F = 180° (sum of angles in a triangle)
33.5 + 127 + ∠F = 180°
160.5 + ∠F = 180
subtract 160.5 from both sides:
160.5 - 160.5 + ∠F = 180 - 160.5
∠F = 19.5°
Hence, the third angle is 19.5°
