मराठी

AM = MB, ∠AOB = 140° ∠OAB = - Mathematics

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प्रश्न

AM = MB, ∠AOB = 140°

∠OAB =

पर्याय

  • 40°

  • 30°

  • 20°

  • 35°

MCQ
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उत्तर

20°

Explanation:

In isosceles triangle OAB (radii OA = OB), the vertex angle at O is 140°.

So each base angle

∠OAB = ∠OBA

= `(180^circ - 140^circ)/2`

= 20°

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