Name: Construction of Line Segment and a Circle
Uploaded: 2019-07-19
Duration: 3 min 34 s
Description: Ruler and compass are the tools in the construction of lengths, angles, and other geometric figures. This video explains how to use them to construct a line...

Question

Draw an angle Of $70^{o}$ with a protractor and bisect it by using a pair of compasses.

Accepted Answer

Let us draw an angle $70^{o}$ of $70^{o}$ with the help of a protractor.

1. To draw $∠ A B C$ , first draw a ray $\vec{B C}$ on a paper.

2. Now, place the protractor in such a way that the midpoint of the baseline coincides with point $B$ .

And the baseline overlaps exactly with ray $\vec{B C}$ of the angle.

Since $\vec{B C}$ lies to the left of the midpoint of the baseline.

3. Start reading the angles on the outer scale, from zero degree and mark at $70^{o}$ as point $A$ .

4. Now remove the protractor and join points $A$ and $B$ .

$∠ A B C$ is the required angle of $70^{o}$ .

5. By using the protractor,

$∠ A B C$ is the required angle of $70^{o}$ .

6. Now, keeping $B$ as the centre and with a suitable radius draw an arc cutting $B C$ and $B A$ at $D$ and $E$ respectively.

7. Then, keeping $D$ and $E$ as the centres draw arcs to cut each other at $F$ and join $B$ and $F$ .

$B F$ is the required angle bisector.

Hence, the angle is bisected using compass.

Draw an angle Of $70^{o}$ with a protractor and bisect it by using a pair of compasses.

Important Questions on Constructions

Learn and Prepare for any exam you want !

Draw an angle Of 70o with a protractor and bisect it by using a pair of compasses.

Important Questions on Constructions

Learn and Prepare for any exam you want !

Draw an angle Of $70^{o}$ with a protractor and bisect it by using a pair of compasses.