Draw a circle with $AB = 5$cm as the diameter. Take any point O on the circle and join OA and OB. What is the measure of $\angle AOB$?

Given :

The diameter of circle $AB = 5$ cm.

To do :

We have to find a measure of $\angle AOB$.

Solution :
 

An angle subtended by diameter on any point on the circle is 90°.

Here, AB is the diameter of the circle. It makes 90° at any point O on the circle.

Therefore, $\angle AOB$ is 90°.

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Updated on: 10-Oct-2022

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