Geometry

• 180(n-2) is the formula you sue for a polygon
• Polygon has 3 or more sides
• The sum of angles is 360 how many sides does the polygon have now.

  • (n-2) x 180 = 3960.
  • Divide both sides by 180 = n-2 = 3960/180
  • n-2 = 22
  • n =24
• Interior ad exterior angles = 180 as they make a straight line
• Sum of exterior angles = 360
• To find how many sides when your given the exterior angle only you decide it by 360 as the sum of exterior angles is 360.
• Interior opposite angles are supplementary (180)