Isosceles Triangles (OG13 Data Suffiency 149)

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When given two triangles, one of which is inside the other (sharing one side), if we are told they are both isosceles triangles, can we not assume which sides are equal?

This refers to question 149 in the OG13 Data Sufficiency section, which I would copy if it weren't for the image.

The second part of the question states: Triangles ABC and ADC are both isosceles triangles. If I'm not mistaken, we can't say which of the two sides of each triangle are equal (unless we're told), correct?
Source: — Data Sufficiency |

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by Jim@StratusPrep » Thu Dec 06, 2012 8:26 am
Exactly right
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