Question

The lines BD and CE intersect at 0. The line OA makes an angle of 30 with OD angle COB = 80° Find Angle 1, 2,3​

Answer 1

30 + ∠2 = 80 ... (vertically opposite angles)

∠2 = 50

Now,

30 + ∠2 + ∠3 = 180 ... (since they form a straight line)

∠3 = 180 - 80

∠3 = 100

Now,

∠1 = ∠3 = 100 ... (vertically opposite angles)

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Answer 2

Step-by-step explanation:

3 + 80 = 180

3 = 180 - 80

3 = 100

1 = 3 (Vertically opposite)

1 = 100

1 + 30 + 2 = 180

100 + 30 + 2 = 180

130 + 2 = 180

2 = 180 - 130

2 = 50

Therefore,

1 = 100

2 = 50

3 = 100