Question

Using your protector draw an angle bac of measure 120 degree with an angle as given draw an angle of measure 90 degree verify by measurements

Answer 1

Answer:

Steps of Construction :

1) Draw a line AC

2)Open Compass and cut an arc on A

3)Without closing that compass cut an arc on the previous arc then put compass on the arc u have drawn now and cut another one. Then draw a straight line on second arc, the angle which is made now is of 120 degree

4)Put compass on 1st arc and draw an arc on upper side. Put compass on second arc (120 degrees of angle) and cut arc on upper side bisecting the previous one. Draw a straight line crossing that arc. The angle which is made now is of 90 degrees.

hope this answer helped u

Answer 2

drawn an angle of measure 90 degree from 120 degree angle using compass

Step-by-step explanation:

Step 1 : Draw a line Segment BA using ruler

Step 2 : Draw an angle of 120° at A on BA and mark other end as C

Step 3 : Using compass taking A as center Draw arc such that it intersect AB & AC at  P & Q

Step 4 : Taking some width of compass Draw an arc taking P as center

Step 5 : Keeping same width of compass as in step 4 , draw arc taking Q as center Such that it intersect arc drawn in step 5 at R

Step 6 : Join AR & Extend

Now repeat Step from 3 to 6 taking AR  & AC ( instead of AB & AC)

and get line AM

∠BAM = 90°

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