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lara [203]
3 years ago
7

Hi can someone PLEASE explain this to me i’m STRUGGLING

Mathematics
2 answers:
skad [1K]3 years ago
5 0

Step-by-step explanation:

Sum of interior angles of a polygon is given by (n-2)180°

where,n is the number of sides.

Since this polygon has 4 sides,

sum of the interior angles = (4-2)180°=360°

x+115°+95°+70°=360°

x°=360°-280°

= 80°

faltersainse [42]3 years ago
4 0

Answer:

x = 80

Step-by-step explanation:

In a quadrilatoral the interior angle sum always adds up to 360 degrees so to find x you would add all of the interior angle sums and subtract that from 360

115 + 95 + 70 + x = 360     just add the like terms

280 + x = 360                 now subtract 280 from both sides so x is alone and you can figure out its value

x= 80

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