I have a square piece of paper(10cm) I fold The square in half to make a rectangle (A1) I fold the rectangle again to make a square (A2) What is the perimeter of rectangle A1

Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.

Which of the following can be used to explain a statement in a geometric proof?

Factor and solve to find roots x squared -x - 90 =0