Maths / Circles / Angle at the Centre is Double The Angle at Circumference

QUESTION

 O is the centre of the circle. If $\angle ACB=25^o,$ what will be the measure of $\angle AOB\;?$

 OPTIONS A. $25^o$ B. $50^o$ C. $125^o$ D. $65^o$
Right Option : B

EXPLANATION
Explain TypeExplanation Content
Text

Angle at the centre is double the angle at the circumference

as angle at the circumference = $25^0$

angle at the centre = $50^0$

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