Construct a $∆\mathrm{DEF}$ in which $\mathrm{EF}=6 \mathrm{cm},\angle \mathrm{E}=70°$ and $\angle \mathrm{F}=60°$. Find the measure of $\angle \mathrm{D}$.
 

In the construction of a line parallel to a given line $AB$ (first step shown in figure), which of the following is the next correct step?

Which of the following options is correct (possible) regarding the length of sides of a triangle ?

Which of the following options is correct (possible) for ASA triangle construction ?

In the SAS triangle construction (first step shown in figure), which of the following in the next correct step?

In $ASA$ triangle construction for $△PQR,$ which of the following is the correct option ?