TANGRAM

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Across
  1. 5. In a parallelogram,line segments that do not cross each other
  2. 6. In a isosceles right triangle,there is an angle that is 90 degrees,it called____
  3. 7. A four-sided shape whose all four sides are the same and from right angles.
Down
  1. 1. Afour-sides shape that has two pairs of parallel lines and do not from right angle
  2. 2. A triangle whose two side-legths are the same.
  3. 3. In a isosceles right triangle,there are two angles that are less than 90 degrees,thay called_____
  4. 4. In a isosceles right triangle,the longest side legth of an right triangle.