• # question_answer 15) Draw a rough sketch of a $\Delta ABC$. Mark a point P in its interior and a point Q in its exterior. Is the point A in its exterior or in its interior?

(i) A triangle is a three sided polygon. A rough sketch of a $\Delta ABC$ is given. (ii) Now, from the figure Point P is inside the $\Delta ABC$ and point Q is outside the $\Delta ABC$. The point A is neither in the exterior nor in the interior of $\Delta ABC$because point A is the vertex of $\Delta ABC$, so it lies on the $\Delta ABC$.