Question

what’s the answer to the problem above?

100

70

30

(i thought it was 130 but i got that wrong the first time so i left it out of the options)

Answer 1

Notice the lines and angles are in parallel.

(x + 10)   and 40  are corresponding angles.

And corresponding angles are always equal

Therefore:

x + 10 = 40

x = 30 degrees

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Have a look at the picture to learn about Angles in parallel lines