Use a ruler
no
By bisecting an angle of 164 degrees or use the compass with the help of a protractor.
pad khaoo !!
In conjunction with a straight edge and a protractor.
use trisection method
bisect between 120 and 180 degree ( 120 + 180= 300/2 =150)
It is possible to construct a 20 degree angle using only Ruler and Compass. I happened to stumble across a method that is highly accurate. It is posted on my blog. Check the related link
First draw a 90 degree angle .Than draw a 20 degree angle from that 90 degree angle . Than the rest of the angle will be 90-20=70 .Now bisect the 70 degree angle we will get 70/2=35. Now add the rest of the angle means 35+20 =55 GOT 55 DEGREE ANGLE
Draw a point, and a long straight line through it. Put the centre of the compass over the point, with north on the compass (or zero degrees) on the line. Then draw a second line out from the point at 80 degrees on the compass. You'll then have a 80 degree angle between the lines. It's usually a trick that teachers decide to do on their pupils. A compass is what you use to find north and a pair of compasses is used to draw circles.
asuming you know how to construct a 60 degree angle, you would start by drawling a basic construction line an then make your angle bisecter with breaks the angle into 30 degree angles. then create another angle bisector for 30 degrees breaking it into 15 degree angles. then do the same with the 15 degree angle. your drawling sould have three angle bisectors for each angle. to get your answer of 22.5 degress angle, simply add the 15 degree angle you drew with the 7.5 angle you got from spliting the 15 degree angle in half its hard to explain without drawing it out..... hope this helps
If you don't have a computer program that will do this for you, you need paper or other material to mark on, a straight edge, a protractor, and something to make marks with (pencil, pen, scribe, etc.)nb You can make a 30 degree angle with a straight edge and a compass (with a pen or pencil in it). You can also do it with a straight edge, pencil, and a string with the string and pencil acting as a compass.
Hint: 90/2=...