Polygons Review

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Across
  1. 5. A --- is a polygon which has four sides.
  2. 8. A --- is a quadrilateral with all sides equal in length.
  3. 9. A --- triangle has no equal sides.
  4. 12. The 'third' side of an isosceles triangle is called the ---.
  5. 15. A --- is a parallelogram with right angled corners.
  6. 16. The --- angles are inside a triangles.
  7. 17. The angle at the apex is called the --- angle.
  8. 18. Each corner of a polygon is called a ---.
Down
  1. 1. A --- is a rectangle with all sides equal in length.
  2. 2. A --- is a polygon with three sides.
  3. 3. A --- is a closed plane figure which has only straight line sides which do not cross.
  4. 4. A --- is a quadrilateral which has opposite sides parallel.
  5. 6. An --- triangle has three equal sides.
  6. 7. A --- is a quadrilateral with one pair of opposite sides parallel.
  7. 10. If we extend any side of a triangle, we can also create --- angles which are outside the triangle.
  8. 11. An -- triangle has at least two equal sides.
  9. 13. The vertex between the equal sides is called the ---.
  10. 14. A --- is a quadrilateral with two pairs of adjacent sides equal in length.