Question 12 Marks
In the given figure, list the points:
- Are in the interior of $\angle\text{AOB}.$
- Are in the exterior of $\angle\text{AOB}.$
- lie on $\angle\text{AOB}.$
Answer
View full question & answer→In given figure:
- Points S and Q are in the interior of $\angle\text{AOB}.$
- Points P and R are in the exterior of $\angle\text{AOB}.$
- Points A, O, B, N, T lie on $\angle\text{AOB}.$
Draw a ray OP. Place the protractor in such a way that its centre lies exactly at O and the base line lies along OP. Starting from 0° on the side of P, look for the 23° mark on the protractor. Mark a point Q at this 23° mark. Remove the protractor and draw the ray OQ. Then $\angle\text{POQ}$ is the required angle whose measure is 23°.
Draw a ray OA. Place the protractor in such a way that its centre lies exactly at O and the base line lies along OA. Starting from 0° on the side of A, look for the 72° mark on the protractor. Mark a point B at this 72° mark. Remove the protractor and draw the ray OB. Then, $\angle\text{AOB}$ is the required angle of measure 72°.
Draw a ray OA. Place the protractor in such a way that its centre lies exactly at O and the base line lies along OA. Starting from 0° on the side of A. Took for the 180° mark on the protractor. Mark a point B on this 180° mark. Remove the protractor and draw the ray OB. Then $\angle\text{AOB}$ is the required angle whose measure is 180°.
Draw a ray OA. Place the protractor in such a way that its centre lies exactly at O and the base line lies along OA. Starting from 0° on the side of A, look for the 25° mark on the protractor. Mark a point B at this 25° mark. Remove the protractor and draw the ray OB. Then $\angle\text{AOB}$ is the required angle.
Draw a ray OA. Place the protractor in such a way that its centre lies exactly at O and the base line lies along OA. Starting from 0° on the side of A, look for the 90° mark on the protractor. Mark a point B at this 90° mark. Remove the protractor and draw the ray OB. Then $\angle\text{AOB}$ is the required angle whose measure is 90°.
Draw a ray RS. Place the protractor in such away that its centre lies exactly at R and the base line lies along RS. Starting from 0° on the side of S, look for the 48° mark on the protractor. Mark a point T at this 48° mark. Remove the protractor and draw the ray RT. Then, $\angle\text{SRT}$ is the required angle whose measure is 48°.
Draw a ray OA. Place the protractor in such a way that its centre exactly lies at O and the base line lies along OA. Starting from 0° on the side of A, look for the 117° mark on the protractor. Mark a point B at this 117° mark. Remove the protractor and draw the ray OB. Then ∠AOB is the required angle whose measure is 117°.