Ex 11.1, 3
Construct the angles of the following measurements :
30°
First we make 60°,
and then its bisector
Steps of Construction :
Draw a ray OA.
Taking O as center and any radius,
draw an arc cutting OA at B.
3. Now, taking B as center
and with the same radius as before,
draw an arc intersecting the previously drawn arc at point C.
4. Draw the ray OD Passing through C
Thus, ∠ AOD = 60°
Now we draw bisector of ∠ AOD
5. Taking B and C as center,
with radius more than 1/2BC, draw arcs intersecting at E.
6. Join OE
Thus, ∠ AOE = 30°

Made by

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.