jueves, 16 de marzo de 2017

1411. Angles and fish

    Which angle is the greatest one? I admit that my question had a certain amount of malice and was overcome by the subtleness of Nina Guindilla's response...

    Dear Teacher:
    The big fish eats the little fish but angles are not fish...
    The exercise on angles was easy:

    Nina Guindilla commented that it was very easy from the formulas for the angles outside and inside a circle.

alpha + beta  =  gamma/2 + delta/2 + gamma/2 – delta/2  =  gamma
alpha – beta  =  gamma/2 + delta/2 – gamma/2 + delta/2  =  delta

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