Adiagonal cross-section of a sphere produces which two dimensional shape

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Type the correct answer in each box, round your answers to the nearest integer 20 25 30 in the figure, the perimeter of hexagon abcdef is approximately w units, and its area is square units