Question

draw an angle of 90°. Construct an angle of 30° by dividing the angle of 90°

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Answer 1

Answer:

Explanation:

ANSWER

Step 1: Draw a line segment. Mark the left end as point O and the right end as point A.

Step 2: Take the compass and open it up to a convenient radius. Place its pointer at O and with the pencil-head make an arc which meets the line OA  

Step 3: Place the compass pointer at A and mark an arc with the same radius as OA we get D

Step 4: Draw a line from O through D.

We get the angle i.e. ∠AOD=60-degree angle.

A 30-degree angle is the half of 60-degree angle. For its construction, you first construct a 60-degree angle as discussed above. Then, you bisect this angle. You get two 30 degree angles.

Again 15-degree angle is the half of 30-degree angle.  You get two 15 degree angles.