Question

in the one of the angle, angle 1 and angle 2 = 100 degree . then the measure of angle 4 is equal to?

Please answer with explanation.

Answer 1

∠1 + ∠2 = 100° (given)

But ∠1 = ∠2 (vertically opposite angles) ⇒ 2∠2 = 100°

⇒ ∠2 = 50° Also ∠2 + ∠4 = 180° (linear pair)

⇒ ∠4 = 180° – 50° = 130°

Answer 2

Answer:

4 - 80°

Step-by-step explanation:

as two are 100 so one will be 50 or more than 50 so as we all know that three angle sum is always 180 so the ans 100-180 = 80

easy