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Problem of the Day #77: Triangles and Angles June 4, 2011

Posted by Aziz in : potd , trackback

If $\angle B’EC$ and $\angle ABA’$ are right angles, find the measure of $\angle CDB$.

Comments»

1. SeungIn - June 7, 2011

Is DAB a straight line?

2. Sreenath - June 7, 2011

No