Question

Construct an angle ${120}^o$. Bisect angle and verify by measuring the two angles.

Answer 1

Steps of Construction:
1. Draw a line segment of any measure named as $PQ$.
2. With $P$ as centre draw an angle of ${120}^o$ with the help of protractor.
3. With $P$ as centre again draw an arc which cuts line segments $PQ$ and $PS$ at $M$ and $N$.
4. With $M$ and $N$ as centres and with radius little more than half the arc, draw arcs cutting each other at $T$. Join $PT$ which is the required bisector of $\angle SPQ={120}^o$
$\therefore \angle TPQ=\angle TPS={60}^o$ (each)