Similar triangles

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Across
  1. 4. b×h×1/2
  2. 5. name this symbol~
  3. 7. same shape but different size
  4. 8. similarity criteria in which 3 sides of a triangle is equal
  5. 9. theorem in which DE||BC, AD/DB=AE/EC
Down
  1. 1. same shape and same size
  2. 2. similarity criteria in which all angles of a triangle is equal
  3. 3. theorem in which (h)^2=(b)^2+(p)^2 is called
  4. 6. triangle in which sum of square of base and perpendicular is equal to square of hypotenuse