Asit Das Gupta and Alok Kumar Solutions for Exercise 1: EXERCISE 3

Use a protractor to construct $\angle ABC$ = $56°$. Draw a ray $OP$. Construct the angle  $QOP$ equal to $\angle ABC$ without using protractor.

Use a protractor to construct $\angle POQ$ = $70°$.Bisect the angle  $POQ$.

Use a protractor to construct  $\angle POQ = 80°$.Now construct an angle of $40°$ with the help of ruler and a pair of compasses.

Draw a line segment $OA = 5\mathrm{cm}$. Use a ruler and a pair of compasses to construct  $\angle BOA$ measuring $60°$.

Draw a line segment $OA = 5\mathrm{cm}$. Use a ruler and a pair of compasses to construct $\angle BOA$ measuring $90°$.

Draw a line segment $OA=5\mathrm{cm}$. Use a ruler and a pair of compasses to construct $\angle BOA$ measuring $120°$.

Draw a line segment$OA = 5\mathrm{cm}$. Use a ruler and a pair of compasses to construct $\angle BOA$ measuring $135°$.

Draw a line segment$AB= 7cm$. using set squares, construct the perpendicular to the line segment at the point $A$.