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How to construct 85 degree angle with compass




Here is how you can draw 85 degree angle with compass
Just follow step by step.

Step: 1
Draw a straight line and make a curved line as shown in figure 1,

Figure 1

Step: 2
Mark 60 degree angle "C" as shown in figure 2;

Figure 2

Step: 3
Mark 120 degree angle "D" as shown in figure 3;

Figure 3

Step: 4
Make a point "E" at 90 degree crossed arc, as shown in figure 4;

Figure 4

Step: 5
Put your compass at "C" and "E" and make arc "F" as shown in figure 5;

Figure 5

Step: 6
Now put your compass at "E" and "F" and make an arc "G" as shown in figure 6;

Figure 6
Step: 7
Make a dotted line from "G" to "O" and another dotted line from "E" to "O" and mark point "H" and "I" as shown in figure 7;

Figure 7

Step: 8
Now make an arc "J" from point "H" and "I" as shown in figure 8;

Figure 8

Step: 9
Now Just make a straight line from "J" to "O" as shown in figure and this is your 85 degree angle as shown in figure 9;

Figure 9

Note: There are lots of chances to make mistakes due to numbers of steps so, If your angle is deviating from 85 degree just, recheck you steps and rearrange them carefully. 

Thanks.

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