4) The key here is recognizing that the diagonals of a rectangle are congruent, and that they bisect each other. Therefore, AE = BE, and AE + BE = BD. Substituting, you get

.
BD=x+75) The sides of a rectangle are parallel to each other. When you draw lines extending the sides, the implications of this become obvious. Suddenly, you have two parallel lines intersected by a transversal, and you probably know those angle relationships. BAC = ACD, so

.

.
To find AED (I believe there's an easier way, but I'm not sure), see that AED is the supplement of AEB, and AEB is 180°

. Therefore, AED is

.
AED=52°
Answer:
d.
Step-by-step explanation:
The measurements should be multiplied by the same factory. If 8 is multiplied by 2, so should 5 to make the rectangular 16×10.
I think no, because a pyramid's lateral face is a triangle, and he can only draw a prism if it's rectangular
Answer:
Either x+15 or x-17.
Step-by-step explanation: