Triangles 6th grade

123456789
Across
  1. 2. number of angles in a triangle
  2. 6. the region inside and on the triangle
  3. 7. a triangle having 2 equal sides
  4. 8. an angle equal to 90 degree
  5. 9. a triangle having all the 3 sides equal
Down
  1. 1. triangle having 3 sides of different length
  2. 3. the region outside the triangle
  3. 4. a three sided closed figure
  4. 5. the region inside the triangle