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eshwarjayanth
- Senior | Next Rank: 100 Posts
- Posts: 40
- Joined: Mon Oct 18, 2010 8:32 am
Statement 1 only tells us that CD=BD and nothing more
Statement 2 gives us the perimeter of the whole triangle, again this does not tell us if the two triangles are congruent
Together, we know that CD=BD, but we don't know whether AD is perpendicular to BC, nor whether AB=AC, so we can conclude E is the answer
