



 
Tia, I think the word you are looking for is congruent.
The two triangles below are congruent since you can pick up the red triangle, translate, rotate and reflect it and place it down exactly on top of the green triangle. It is common for mathematicians to consider geometrical figures to be the same if they are congruent. Outside mathematics I wouldn't say they are exactly the same, one is red and the other is green. Harley  


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