Răspuns :
Răspuns:
a.
x+30°+x=180°
2x=180°-30°
x=150°:2
x=75°
b.
x-42°+x=180°
2x=180°+42°
x=222°:2
x=111°
d.
x+24°+x=90°
2x=90°-24°
x=66°:2
x=33°
Răspuns:
a.
x+30°+x=180°
2x=180°-30°
x=150°:2
x=75°
b.
x-42°+x=180°
2x=180°+42°
x=222°:2
x=111°
d.
x+24°+x=90°
2x=90°-24°
x=66°:2
x=33°