Polygons and Triangles

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Across
  1. 2. a polygon with 9 sides
  2. 3. The sum of the angles measures of a _________ is 180°.
  3. 9. a polygon with 12 sides
  4. 10. An __________ angle is an inside angle formed by two sides of a polygon with a common vertex.
  5. 11. a polygon with 6 sides
  6. 13. the sum of an exterior angle and the corresponding interior angle of any polygon are ___________
  7. 15. a polygon with 10 sides
  8. 17. a polygon with 3 sides
  9. 19. a ______________polygon is a polygon where the diagonals are inside
  10. 20. a polygon with n number of sides
Down
  1. 1. a polygon with 5 sides
  2. 4. a polygon with 7 sides
  3. 5. a polygon with 4 sides
  4. 6. a _____________ interior angle is an interior angle that is not adjacent to the exterior angle
  5. 7. a polygon with 8 sides
  6. 8. a line that connects two vertices of a polygon or a solid, whose vertices are not on the same edge.
  7. 12. The measure of an exterior angle of a triangle is equal to the__________of the measures of its remote interior angles.
  8. 14. Polygon Angle Sum ___________ The sum of the measures of the interior angles of a convex polygon with n sides is (n – 2) 180°.
  9. 16. a ______________ polygon is a polygon where at least one diagonal is on the outside.
  10. 18. a two-dimensional closed shape bounded with straight sides.