Let’s draw adjacent angles by using protractor whose measurements are given below.

35°, 45° ; 18°, 42° ; 32°, 90° ; 73°, 63°

Let’s see the measurement of the angles given below and examine which pair of angles are supplementary to each other:

47°, 58°, 69°, 75°, 133°, 105°, 122°, 125°

Lets define adjacent angles and write which pair of angles are adjacent from the following figures.

Sayantani drew a straight line AB. I drew a ray PQ from a point P on AB. As a result two adjacent angles ∠PQB and ∠PQA are formed. Let’s write the measurement of angles ∠PQB and ∠PQA are formed. Let’s write the measurement of angles ∠PQB and ∠PQA and ∠PQB + ∠PQA by using protractor.

Shakil draws two adjacent angles ∠ABC and ∠ABD whose sum of measurement is 180°; I also drew ∠ABC and ∠ABD like Shakil and examined whether point B,D and C lie on a same straight line or not.