PLEASE HELP IM ON A TEST WILL REPORT IF U DONT ANSWER THE QUESTION Fred was playing a board game with his friends. In the game, he could move forward or backward on the board
depending on the card he was given. His first card moved him backward 10 spaces. His next card moved him

backward another 7 spaces.
What was the position of Fred's piece on the board relative to his starting position?

Enter your answer in the box.
spaces

Here is their argument. given the obtuse angle x, we make a quadrilateral abcd with ∠dab = x, and ∠abc = 90◦, and ad = bc. say the perpendicular bisector to dc meets the perpendicular bisector to ab at p. then pa = pb and pc = pd. so the triangles pad and pbc have equal sides and are congruent. thus ∠pad = ∠pbc. but pab is isosceles, hence ∠pab = ∠pba. subtracting, gives x = ∠pad−∠pab = ∠pbc −∠pba = 90◦. this is a preposterous conclusion – just where is the mistake in the "proof" and why does the argument break down there?

Can someone me with these two circle theorem questions asap?

Select the number of ways in which a line and a circle can intersect