The line segments joining the midpoints of the adjacent sides of a quadrilateral form a:

The sides of a triangle measure $6.3 \mathrm{cm}$, $6.5 \mathrm{cm}$ and $1.6 \mathrm{cm}$, the given triangle is:

If three sides of a triangle are $a, \sqrt{3}a$ and $\sqrt{2}a$ then the measure of the angle opposite to the largest side is:

In the figure, $QA\perp AB$ and $PB\perp AB,$ then $AQ$ is:

In $△ABC, \frac{AB}{AC}=\frac{BD}{DC}$. If $\angle B=70°, \angle C=50°,$ then $\angle BAD$ equals:  

In $△ABC$ and $△DEF$, it is given that $\frac{AB}{DE}=\frac{BC}{FD},$ then they will be similar when