Constructing angles using protractor

Practical Geometry
Serial order wise

Here, we will draw 75° using protractor.

To draw 75° using compass, please check Ex 11.1, 4 ( i ) of Class 9 NCERT

### Transcript

Question 1 Draw ∠POQ of measure 75° and find its line of symmetry. Here, we will draw 75° using protractor. To draw 75° using compass, please check Ex 11.1, 4 (i) of Class 9 NCERT We follow these steps Draw a ray OA 2. Place center of protractor on point O, and coincide line OA and Protractor line 3. Mark point B on 75° 4. Join OB ∴ ∠ AOB = 75° Now, we need to find its line of symmetry i.e. we need to find its bisector. We follow these steps 1. Mark points C and D where arc intersects OA and OB 2. Now, taking C and D as centers and with the radius more than 1/2 CD, draw arcs to intersect each other. 3. Let them intersect at point E 4. Join O & E ∴ OE is the line of symmetry of ∠ BOA = 75°

#### Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.