Chrissy and Kathy are sisters. Chrissy was born on Kathys birthday and is exactly 8 years younger. Chrissy celebrates her 16th birthday on December 6 2005. Complete the table to show the ages of the sisters in 2005 2008 and 2011

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

what

my guess would be b and d, but i didn’t actually get out the pen and paper. lol