Mathematics for Carpenters and Builders - Carpenter's and Builder's Math, Plans, and Specifications - page 160

F

C

L

I

D

E

A
B

G

H

Figure 5-38 To construct a parallelogram given the sides and

an angle.

In Figure 5-40, draw the diagonals
AB and CD intersecting at E . With a
radius EA , circumscribe the circle. To
inscribe a circle, draw a perpendicular
from the center (as just found) to one
side of the square, as line OM . With
radius OM , inscribe the circle.

C

F

K

A B

E

Problem 21
To circumscribe a square around a cir-
cle.

Figure 5-39 To draw a
circle around a triangle.

M C

A

A

C

E

O

D

B

D

B

(B) INSCRIBED
CIRCLE
Figure 5-40 (A) To circumscribe a circle around a square.
(B) To inscribe a circle inside a square.

(A) CIRCUMSCRIBED
CIRCLE