The regular pentagon ABCDE rotates counterclockwise about its center to form pentagon A′B′C′D′E′. The angle of rotation at which point A′ coincides with point D is
°.

Space is not completely empty. there are small particles in space. what happens when these particles come together?

What is the difference between an independent and a dependent variable?

What was the significance of the british reform act of 1832? a. voters were given the right to vote by secret ballot b. members of the middle class were permitted to run for parliament c. members of the working class demanded and received better living conditions d. farm workers, factory workers, and women were given the right to vote