Question

folosind figurile de mai jos determina X​

Answer 1

Răspuns:

×+40°=60°

×=60°-40°

x=20°

2x+50°=90°

2x=90°-50°

2x=40°

×=40°:2

x=20°

2x+x+90°=180°

3x+90°=180°

3x=180°-90°

3x=90°

x=90°:3

x=30°