anonymous
  • anonymous
I need help with Polygons and their angles, ill fail if i dont get it done ;~; please help me (:
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
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campbell_st
  • campbell_st
ok... so for the 1st question let x be the smallest angle then the other 3 angles are x + 10, x + 20 and x + 30 and knowing the angles in a quadrilateral add to 360 you have an equation x + x + 10 + x + 20 + x + 30 = 360 so 4x + 60 = 360 just solve for x.
campbell_st
  • campbell_st
for the 2nd question just count the sides that make the perimeter of the composite shape don't count the common side

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anonymous
  • anonymous
im so lost
anonymous
  • anonymous
Would it be 75? @campbell_st
campbell_st
  • campbell_st
well the smallest angle is 75... so if each other angle inceases by 10 degrees, what are the other 3..?
anonymous
  • anonymous
20 30 40?
anonymous
  • anonymous
So would the answer be 165? @campbell_st
undeadknight26
  • undeadknight26
4x + 60 = 360 - 60 -60 4x = 300 /4 /4 x = ?
undeadknight26
  • undeadknight26
I think that's how you do it el xD
anonymous
  • anonymous
thats still 75
anonymous
  • anonymous
i need to know what to do next
undeadknight26
  • undeadknight26
I dunno I just solved @campbell_st 's equatio
anonymous
  • anonymous
i still dont get it i need someone to actually explain it :/
Excalibur0126
  • Excalibur0126
It would be 75, 85, 95, and 105. Those numbers added up would be 360.

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