Jharne De and Ranjana Kumar Solutions for Chapter: Constructions, Exercise 2: Revision Exercise

Draw two-line segments $\mathrm{A}\mathrm{B}$ and $\mathrm{C}\mathrm{D}$ of lengths $7.5\mathrm{c}\mathrm{m}$ and $5.4\mathrm{c}\mathrm{m}$, respectively. Draw $\mathrm{P}\mathrm{Q}$ equal to the difference of $\mathrm{A}\mathrm{B}$ and $\mathrm{C}\mathrm{D}$. Measure the length of $\mathrm{P}\mathrm{Q}$ for its verification.

Draw a line segment $\mathrm{X}\mathrm{Y}=6.5\mathrm{c}\mathrm{m}$. Mark any point $\mathrm{A}$ on it. Draw a
perpendicular on $\mathrm{X}\mathrm{Y}$ passing through the point $\mathrm{A}$.

Construct the following angles using a scale and a pair of compasses.
${30}^{\mathrm{o}}$

Construct the following angles using a scale and a pair of compasses.
${120}^o$

Construct the following angles using a scale and a pair of compasses.
${90}^o$

Using a protractor, draw $\angle \mathrm{B}=75°$. Draw the angle bisector of this angle.

Draw an angle $\mathrm{A}$ equal to the given angle $\mathrm{P}\mathrm{Q}\mathrm{R}=75°$.

Draw an angle of measure $40°$ and name it $\angle \mathrm{P}\mathrm{Q}\mathrm{R}$. Construct another angle which is equal to $\mathrm{\angle }\mathrm{P}\mathrm{Q}\mathrm{R}$. Name it as $\angle \mathrm{A}\mathrm{B}\mathrm{C}$.