Mathematics for Carpenters and Builders - Carpenter's and Builder's Math, Plans, and Specifications - page 148

BASE

LEG LEG

DIAGONAL

ALTITUDE

BASE

Figure 5-15 The parallel sides of a quadrilateral (four-sided
polygon) are the bases. The distance between the bases is the
altitude, and a line joining two opposite vertices is a diagonal.

LESS
THAN
90 °

(A) (B) (C)

Figure 5-16 Various prisms: (A) cube, or equilateral paral-
lelopipedon; (B) parallelopipedon; and (C) oblique parallelop-
ipedon.

(A)

(B) (C)
Figure 5-17 Various solids: (A) pentagonal prism, (B) triangu-
lar prism, and (C) cylinder.