How many crew members in all were in expeditions 1 through 6? -in mathematics book page 6-7

Aregular hexagon rotates counterclockwise about its center. it turns through angles greater than 0° and less than or equal to 360°. at how many different angles will the hexagon map onto itself?

Which of the following points is collinear with (-2,1) and (0,3)

Given: and prove: what is the missing reason in the proof? given transitive property alternate interior angles theorem converse alternate interior angles theorem