Using only a ruler, draw an acute angle, a right angle and an obtuse angle in your notebook and name them.

Construct the following angle with the help of a protractor.

${23}^{°}$

Construct the following angle with the help of a protractor.

${25}^{°}$

Construct the following angle with the help of a protractor.

${90}^{°}$

Construct the following angle with the help of a protractor.

${72}^{°}$

Construct the following angle with the help of a protractor.

$$${115}^{°}$

Construct the following angle with the help of a protractor.

${165}^{°}$

Construct the following angle with the help of a protractor.

${180}^{°}$