Page 660 - Basic College Mathematics with Early Integers

S E C T I O N 9.2 I PLANE FIGURES AND SOLIDS 637

Fill in each blank.

21. Twice the radius of a circle is its _________________. 22. A rectangle with all four sides equal is
a(n) __________.

23. A parallelogram with four right angles is a(n) 24. Half the diameter of a circle is its _____________.
________.

25. A quadrilateral with opposite sides parallel is a(n) 26. A quadrilateral with exactly one pair of opposite
___________. sides parallel is a(n) ___________.

27. The side opposite the right angle of a right triangle is 28. A triangle with no equal sides is a(n) ____________.
called the ___________.

Find the unknown diameter or radius in each figure. See Example 3.

29. 30. 31. 32.
r 3 mi
r ? d 13 ft
d ? d 29 cm r ?
r 7 m d ?

33. 34. 35. 36.

d ? d 168 in. d 2.6 m
r 20.3 cm
d ? r ? r ?
r 7.8 in.

Largest pumpkin pie Largest cereal bowl
(Source: Circleville, (Source: Guinness
Ohio, Pumpkin World Records)
Festival)

Objective Identify each solid.

37. 38. 39.