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Find the value of 2. 128° xº 820 40° to E


Please help me ​

Find the value of 2. 128° xº 820 40° to E Please help me ​-example-1

1 Answer

7 votes

Answer:

110 degrees

Explanation:

Ok so in a quadrilateral, the sum of the interior angles have to add up to 360 degrees*.

This means that x + 128 + 82 + 40 = 360, so you can solve this as an equation:

x + 128 + 82 + 40 = 360

x + 250 = 360

x = 110 degrees

*The reason the interior angles of a quadrilateral add up to 360 degrees is because the formula for the sum of the interior angles in a polygon is

180 * (n - 2) where n is the number of sides, so since this polygon has 4 sides it would be:

180 * (4 - 2)

180 * 2

360 degrees

Hope that makes sense!

User Bohan
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