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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

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Q: How do you make 55 degree angle with using compass and ruler?

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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

An angle of 65° can not be trisected using a compass and straight edge.

A 10 degree angle cannot be constructed using only a compass and straight edge.

by 60 degree and 90 degree

You cannot, you must use a protractor.

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by using a ruler and a compass

use trisection method

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 ray .

Construct 2 perpendicular lines which will meet at 90 degrees then by bisecting this angle wll give a 45 degree angle

An angle of 65° can not be trisected using a compass and straight edge.

A 10 degree angle cannot be constructed using only a compass and straight edge.

by 60 degree and 90 degree

You cannot, you must use a protractor.

With a straight edge and a protractor

with compass.........at 90+60degree angle,,,,,,,,, * * * * * and 90 + 60 = 105??? You need to draw a 90 degree ange and bisect it to give a 45 deg angle. Then add a 60 degree angle. 45 + 60 = 105.

With the ruler and compass construct a right angle isosceles triangle with a base of 9 cm At 4 cm from the LHS or RHS of the base draw a line that meets the apex of the triangle The angle of this line will be 40 degrees because each 1 cm of base space represents 10 degrees when joined to the apex