1.

Triangle ABC given below is a right-angled isosceles triangle in which \[\angle \text{BAC}=90{}^\circ \]. Which one of the following relations is true?

A. \[\angle \text{ABC}+\angle \text{ACB}=\angle \text{BAC}\]
B. \[\text{AB+AC}=\text{BC}\]
C. \[\angle \text{ABC}=\angle \text{ACB}=30{}^\circ \]
D.  \[\text{BC}=2\times \text{AB}\]
E. None of these
Answer» B. \[\text{AB+AC}=\text{BC}\]


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