What is the shape of the following distribution {3, 4, 4, 5, 5, 5, 8, 8, 8, 7, 7, 7, 2, 6, 6, 6, 15}

Can someone me with these two circle theorem questions asap?

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.