Question

from unit 1, lesson 2 here is a diagram. starting with two marked points, a and b, precisely describe the straightedge and compass moves required to construct the quadrilateral acbd in this diagram.

Explanation:

Step1: Set compass width

Set the compass width to the distance between A and B.

Step2: Draw circles

With center A, draw a circle. Then, with center B, draw another circle. The two circles intersect at points C and D.

Step3: Connect points

Use a straight - edge to connect points A to C, C to B, B to D, and D to A to form the quadrilateral ACBD.

Answer:

1. Set compass width as AB.
2. Draw circles centered at A and B.
3. Connect intersection points C, D with A and B using straight - edge.