In the diagram of circle a, what is m∠lmn?


Asked by wiki @ in Mathematics viewed by 338 People


Answered by wiki @


we know that

The measurement of the external angle is the semi-difference of the arcs which includes

so

m∠LMN=\frac{1}{2}(270\°-90\°)=90\°

therefore

the answer is 90\°

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