Question

Doua drepte paralele a si b intersectate de secanta d determina 8 unghiuri.Masurile a doua dintre cele 8 unghiuri se exprima in grade prin x si 3x+30°.Determinati masurile celor 8 unghiuri.

Answer 1

x+3x+30°=180°
4x=180°-30°
x=150°/4
x=37,5°
3x+30°=3×37,5°+30°=112,5°+30°=142,5°
se formeaza 4 unghiuri a 37,5° si 4 unghiuri a 142,5° deoarece secanta intersecteaza 2 drepte paralele

Answer 2

x+3x+30°=180° 4x=180°-30° x=150°/4 x=37,5° 3x+30°=3×37,5°+30°=112,5°+30°=142,5°