Pedro quiere comprar una mochila, en la tienda departamental tienen 4 mochilas rojas, 10 mochilas negras, 5 mochilas azules y 3 mochilas blancas ¿Cuantas opciones tiene Pedro para elegir su mochila?

6 on both sides and twelve on the top and the bottom

step-by-step explanation:

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

idk

step-by-step explanation:

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