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Question

Follow the following steps of constructions:
(a) Draw a line l and mention a point O on it.
(b) With O as center and a short radius, draw an arc that cuts line l at A.
(c) With A as center and the same radius (as in step 2), draw an arc that cuts the first arc at B.
(d) Join O and B. Extend OB to get a ray.
What is the measure of ∠AOB (in degrees)?


A

45

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B

60

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C

75

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D

90

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Solution

The correct option is B

60


Upon following the above steps, we obtain an angle of 60
Hence, AOB=60


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