If `triangle ABC cong triangle DEF` then
`BC` = ________

If triangle ABC cong triangle DEF then angle BCA = _______

If triangle ABC cong triangle DEF then CA = ________

If triangle ABC cong triangle DEF then AB = ________

If triangle ABC cong triangle DEF then angle EDF = ________

If triangle ABC cong triangle DEF then angleE = ______

For triangle ABC cong triangle ACB , then

Write the converse conradiction and contrapositive of the statement " triangle ABC cong triangle DEF , then1riangle ABC ~ triangle DEF".

If triangle ABC is similar to triangle DEF such that 2AB = DE and BC = 8 cm then EF is .

In triangle ABC and triangle DEF, AB = DE, BC = EF and angleB = angleE . If the perimeter of triangle ABC is 20, then the perimeter of triangle DEF is ..........