EXERCISE 4.4

Draw a rough sketch of a triangle $\mathrm{A}\mathrm{B}\mathrm{C}.$ Mark a point $\mathrm{P}$ in its interior and a point $\mathrm{Q}$ in its exterior. Is the point $\mathrm{A}$ in its exterior or in its interior?

 Identify how many triangles are there in the figure.

Write the names of seven angles.

 Write the names of six line segments.

If $\angle k$ is the common angle of two triangles $∆\mathrm{ABC} \mathrm{and} ∆\mathrm{ABD}$, then write the vertex of $\angle k$.