Mathematics
Draw a rough sketch of a triangle 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?
Geometrical Concepts
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Answer
A rough sketch of triangle ABC is drawn below with point P inside the triangle and point Q outside the triangle.
Point A is a vertex of triangle ABC and lies on the boundary of the triangle. A point on the boundary is neither in the interior nor in the exterior of the triangle.
∴ Point A lies neither in the interior nor in the exterior of the triangle. It lies on the triangle (boundary).
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