Question

construct 60 degree, 120 degree​

Answer 1

Answer:

60 degree

Step 1:  Draw the arm AB.

Step 2:  Place the point of the compass at A and draw an arc that passes through B.

Step 3:  Place the point of the compass at B and draw an arc that passes through A.  Let this arc cut the arc drawn in Step 2 at B.

Step 4. 60 is constructed

120 degree

We know that: 60 + 120 =180

This means that 120º is the supplement of 60º.  Therefore, to construct a 120º angle, construct a 60º angle and then extend one of its arms

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