Respuesta :
The sum of angles in a triangle is 180°.
To obtain the third angle (let's call it x), we simply calculate thus:
30° + 100° + x = 180°
130° + x = 180°
x = 180° - 130°
x = 50° ... (A)
To obtain the third angle (let's call it x), we simply calculate thus:
30° + 100° + x = 180°
130° + x = 180°
x = 180° - 130°
x = 50° ... (A)