MHB What is the value of Angle BAD in a trapezoid with specific conditions?

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A trapezoid ABCD given :
(1)$\overline{AB} // \overline{CD}$
(2)$\overline{BC}\ \perp \overline{AC}$ and $\overline{BC}=\overline{AC}$
(3)$\overline{AB}=\overline{BD}$
find the value of $\angle BAD$
 
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Albert said:
A trapezoid ABCD given :
(1)$\overline{AB} // \overline{CD}$
(2)$\overline{BC}\ \perp \overline{AC}$ and $\overline{BC}=\overline{AC}$
(3)$\overline{AB}=\overline{BD}$
find the value of $\angle BAD$

The height of trapezoid $$ABCD$$ is one-half of its base. This implies that $$\angle{ABD}=30^\circ$$. As $$\triangle{ABD}$$ is isosceles, $$\angle{BAD}=75^\circ$$.
 
greg1313 said:
The height of trapezoid $$ABCD$$ is one-half of its base. This implies that $$\angle{ABD}=30^\circ$$. As $$\triangle{ABD}$$ is isosceles, $$\angle{BAD}=75^\circ$$.
very good solution!
 
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