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Question

The number of equal angles an arc subtends in the opposite segment is two.


A

True

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B

False

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Solution

The correct option is B

False


The angle subtended by an arc in a segment are equal. It can be proved as shown below.

Let AB be the arc, O be the center of the circle and let ACB and ADB be the angles subtended by the arc AB in the major segment formed by it.

Join OA and OB.

Now, AOB is the angle subtended by an arc at the center of the circle which is equal to twice the angle subtended by the arc at any point on the circle.

AOB = 2ACB = 2 ADB

ACB = ADB

Here C and D are any general points on the circle.

So angles subtended by an arc in a segment are equal.

Number of equal angles subtended by an arc in opposite segment is not 2.

It is infinite.


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