Suppose we have universal set U. What does it mean to say that X is a subset of U?

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.

Meg constructed triangle poq and then used a compass and straightedge to accurately construct line segment os, as shown in the figure below, which could be the measures of angles pos and angle poq?

Ofin . (2,4) (2,1) a. y= 2 b. x= 2 c. x= -2 d. y= 2x