Q 3.     Examine whether you can construct $\Delta DEF$ such that EF = 7.2 cm, $m\angle E = 110^{\circ}$ and $m\angle F = 80^{\circ}$. Justify your answer.

No, we cannot construct such that EF = 7.2 cm, $m\angle E = 110^{\circ}$ and $m\angle F = 80^{\circ}$. This is because of the property of the triangle of having a sum of internal angles equal to 180 degrees. if we have $m\angle E = 110^{\circ}$, then we cannot have $m\angle F = 80^{\circ}$ because then the sum would exceed 180 degree which is impossible.

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