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Question
Draw a line AB. At A, draw an arc of length 3 cm using compass such that it intersects AB at O. With the same spread of compass, put the compass pointer at O and make an arc that intersects the previous arc at P. With the same spread again, put the compass pointer at P and draw an arc that intersects the first arc at Q. Join A and Q. Using the protractor, measure ∠QAB. What is the value of ∠QAB.
Draw a line AB. At A, draw an arc of length 3 cm using compass such that it intersects AB at O. With the same spread of compass, put the compass pointer at O and make an arc that intersects the previous arc at P. With the same spread again, put the compass pointer at P and draw an arc that intersects the first arc at Q. Join A and Q. Using the protractor, measure ∠QAB. What is the value of ∠QAB.
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Solution
The correct option is D 120º
Step 1: Draw a line AB with an arc of length of 3 cm at point O.
Step 2: Draw an arc that intersect the previous arc at P.
Step 3: Draw an arc that intersect the first arc at Q. Join A and Q.
In the above figure
∠QAB =120∘
120º
Step 1: Draw a line AB with an arc of length of 3 cm at point O.
Step 2: Draw an arc that intersect the previous arc at P.
Step 3: Draw an arc that intersect the first arc at Q. Join A and Q.
In the above figure
∠QAB =120∘
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