Question

if the following figure , if 1 +2 =100°,then the measure of 4 is equal to:​

Answer 1

Answer:

130 degrees

Step-by-step explanation:

∠1=∠2                                               (Vertically opposite angles)

∠1+∠2=100°

∠1+∠1=100°

∠1=50°

∠1+∠4=180 °                                                (linear pair)

50°+∠4=180°

∠4=130°