One interior angle of a convex polygon (a convex polygon is a polygon where all angles are less than 180 degrees) is 120 degrees. All the other angles are 130 degrees. How many sides
does the polygon have?​

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

c: lkllmn.

hope it's you

the answer would be 44.79

plz mark brainliest

step-by-step explanation:

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