Maths / Circles / Equal Chords of a Circle Subtend Equal Angle at the Centre

QUESTION

 In the given circle, AM = BM and AM subtends an angle of $70^o$ at the centre O. The measure of $\angle AOB$ is  ____________

EXPLANATION
Explain TypeExplanation Content
Text

As $AM=BM \; and \; \angle AOM=70^o.$

Equal Chord subtend equal angle at the centre

$\angle AOM = 70^0$

$\angle AOB = \angle AOM + \angle MOB= 70^0 + 70^0= 140^0$

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