Quarilateral !!

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Across
  1. 5. angles when they have the same vertex and shares a side
  2. 6. a quadrilateral with one pair of opposite sides parallel.
  3. 7. angles have the same angle measure
  4. 8. angles have 180°
  5. 12. a parallelogram where all sides and diagonals are equal.
  6. 13. a parallelogram in which all angles are 90°
  7. 14. a polygon having four sides, four angles, and four vertices.
  8. 15. have two equal sides of a triangle
Down
  1. 1. a quadrilateral with two pairs of parallel sides.
  2. 2. when angles are divided into 2
  3. 3. a quadrilateral whose four sides can be grouped into two pairs of equal-length sides that are adjacent to each other
  4. 4. a point of a polygon where the sides or edges of the object meet
  5. 9. are lines in a plane that are always the same distance
  6. 10. a quadrilateral with both pairs of opposite sides parallel and all sides the same length
  7. 11. angles that involve the base of an isosceles triangle