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Interior Angles of Polygons

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  • What is the measure of one interior angle of a regular quadrilateral?
    90 degrees
  • What is the measure of one interior angle of a regular triangle?
    60 degrees
  • What is the sum of the angle measures in a 15-gon?
    2,340 degrees
  • What is the measure of one interior angle of a regular 14-gon? (Round to the nearest 10th if necessary)
    154.3 degrees
  • What is the measure of angle w?
    135 degrees
  • What is the measure of one interior angle of a regular decagon?
    144 degrees
  • A right triangle has one angle that measures 60°. What is the measure of the other acute angle?
    30 degrees
  • One angle of an isosceles triangle measures 120°. What measures are possible for the other two angles?
    30 degrees
  • What is the measure of one interior angle of a regular hexagon?
    120 degrees
  • What is the measure of the missing angle?
    31 degrees
  • What is the measure of the missing angle?
    69 degrees
  • What is the measure of angle d?
    130 degrees
  • What is the measure of the missing angle?
    47 degrees
  • One angle of an isosceles triangle measures 100°. What measures are possible for the other two angles?
    40 degrees
  • What is the measure of angle m?
    150 degrees
  • A right triangle has one angle that measures 75°. What is the measure of the other acute angle?
    15 degrees
  • What is the measure of the missing angle?
    57 degrees
  • What is the sum of the angle measures in this shape?
    720 degrees
  • What is the 'rule' for finding the total measure of interior angles of any shape?
    Number of sides - 2 then x 180
  • What is the sum of the angle measures in a triangle?
    180 degrees
  • What is the sum of the angle measures in this shape?
    1,080 degrees