Which of the following methods are useful in solving a geometric proof? select all that apply. redraw the figure work backwards look at theorems related to the figure mark the figure to reflect the given statement(s)

Subtract 8 1/6 - 4 5/6 . simplify the answer and write as a mixed number.

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Which of the following is true for the relation f(x)=2x^2+1