Construction of Standard Angles

Construct the angle $120° \text{and} 30°$, in the same ray using a ruler and compass.

Is it possible to construct angle $120$ degrees without using a protractor? If possible construct the angle.

Construct the angle $120°$ in the same ray without using a protractor.

Construct angle $120°$ and $60°$ using ruler and compass.

Construct angle $120$ degrees using ruler and compass.

The bisectors of angles $\mathrm{P}$ and $\mathrm{Q}$ of a scalene $△\mathrm{PQR}$ meet at $\mathrm{O}$. What is the relation between angle $\mathrm{PRO}$ and angle $\mathrm{QRO}$?

The bisectors of angles $A$ and $B$ of a scalene triangle $ABC$ meet at $O$. What is the relation between angle $ACO$ and angle $BCO$?

An angle of $22.5°$ can be constructed using a ruler and a compass (Without using a protractor).

The steps to construct an angle of $60°$ at the initial point of a ray is given below.

1. Taking $A$ as centre and some radius, draw an arc of a circle, which intersects $AB$, say at a point $D$.
2. Taking $D$ as centre and with the same radius as before, draw an arc intersecting the previously drawn arc, say at a point $E$.
3. Draw the ray $AC$ passing through $E$.

Which of the following statement is true?

We can draw an angle of $100°$ with the help of 

Construct the below angle:

$\angle JKL=150°$

Draw the following angle in your notebook

$150°$

Which of the following angles cannot be constructed using a ruler and compass?

With the help of a ruler and a compass, it is not possible to construct an angle of