Jharne De and Ranjana Kumar Solutions for Chapter: Constructions, Exercise 1: Mental Maths

Draw a line segment $AB$ of length $5.6\mathrm{cm}$. Then construct another line segment $PQ$, double the length of $AB$. Find its measure

Construct an angle of measure $45°$ with the help of a protractor. Bisect it and find the measure of the bisected angles.

Write a Pythagorean triplet for the construction of a right triangle.

How many lines can be drawn through a given point?

How many lines can be drawn parallel to a given line through a point outside it?

How many lines can be drawn parallel to a given line?

How many line(s) can be drawn through two given points?

Can we construct $∆DEF$ such that $EF=7.5cm,\angle E=110°,\angle F=80°$ ?