Irregular Polygons - Missing Interior Angles Exercise

Irregular Polygons - Missing Interior Angles

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Irregular Polygons - Missing Interior Angles

Find unknown interior angle measurements in irregular polygons where angles vary.

Questions

  1. MultiChoice

    An irregular pentagon has interior angles measuring 100°, 110°, 120°, and 130°. What is the measure of the fifth angle?

  2. MultiChoice

    An irregular hexagon has interior angles measuring 120°, 130°, 110°, 115°, and 125°. What is the sixth angle?

  3. MultiChoice

    An irregular quadrilateral has three angles of 70°, 85°, and 115°. What is the fourth angle?

  4. MultiChoice

    In an irregular heptagon, six of the interior angles sum to 780°. What is the seventh angle?

  5. MultiChoice

    An irregular octagon has seven interior angles that sum to 930°. What is the eighth interior angle?

  6. MultiChoice

    An irregular pentagon has three right angles and one angle of 110°. What is the fifth angle?

  7. MultiChoice

    A quadrilateral has two right angles and one angle measuring 60°. What is the fourth angle?

  8. MultiChoice

    An irregular hexagon has four angles of 120° each and one angle of 100°. What is the last angle?

  9. MultiChoice

    A nonagon has eight angles totaling 1120°. What is the remaining interior angle?

  10. MultiChoice

    In a decagon, nine interior angles add up to 1300°. What is the measure of the tenth angle?

  11. MultiChoice

    An irregular pentagon has angles x, 100°, 110°, 120°, 130°. What is x?

  12. MultiChoice

    A pentagon has interior angles 90°, 90°, 120°, 130°, and x. What is x?