Question 2 A roofer is working on the roof of a small outdoor building. The side view of the roof is shown in the diagram.

What is the angle the roof makes with the edge of the building to the nearest tenth of a degree?

A
43.2°
B
28.1°
C
32.2°
D
20.4°

Place the compass at point A and open compass to greater than P draw arcs above and below the diameter

Step-by-step explanation:

* Lets revise how to construct a square

1. Using your compass, draw a circle and label the center O

2. Using your straightedge, draw a diameter of the circle, labeling the

   endpoints A and B.

3. Place the pin of the compass at point A and open it to greater than O

   draw an arc above and below the diameter

4. Without change the open of the compass place the pin of the

   compass at point B and draw an arc intersects the other arc above

   and below the diameter

5. Join the points of intersection above and below the diameter by a

   segment which is the perpendicular bisector of the diameter AB

6. Label the points where the bisector intersects the circle as C and D.

7. Join points A , B , C , D to form the square.

* Now lets solve the problem

- The step after drawing a circle with center P and diameter AB is:

* Place the compass at point A and open compass to greater than P

 draw arcs above and below the diameter

# Look to the attached graph for more understand