Identity Property of Multiplication(eye-DEN-ti-tee
PROP-ur-tee UHV muhl-tuh-pluh-KAY-shuhn)
Multiplying 1 and any number does not change
the value of the number. a• 1 a or
1 • aa. (p. 14)
image (IM-ij) The figure that results from a
transformation. (p. 370)
impossible event (im-POSS-uh-buhl i-VENT) An
event that cannot happen. (p. 330)
improper fraction (im-PROP-ur FRAK-shuhn) A
fraction in which the numerator is greater than or
equal to the denominator. (p. 413)
independent event (in-di-PEN-duhnt i-VENT)
An event that does not depend on the outcome
of another event. (p. 340)
indirect measurement (in-duh-REKT
MEZH-ur-muhnt) A type of measurement that is
used when the distance, height, or length of an
object is difficult to measure directly. (p. 162)
inequality (in-i-KWOL-uh-tee) A mathematical
sentence that compares two expressions using
, , , , or. (p. 54)
input values (IN-putVAL-yooz) Another name
for domain, or x-values. (p. 358)
inscribed angle (in-SKRIBED ANG-guhl) An
angle whose vertex is on the circle and whose
sides intersect the circle at other points. (p. 263)
inscribed circle (in-SKRIBED SUR-kuhl) A circle
inside a polygon whose sides are tangent to the
circle. (p. 263)
integers (IN-tuh-jurz) Whole numbers and their
opposites. (p. 2)
interest (IN-tur-ist) The amount of money earned
or paid in exchange for the use of money. (p. 198)
interior angles (in-TEER-ee-ur ANG-guhlz)
- Angles formed between parallel lines that are
intersected by a transversal. (p. 246) 2. Angles
that lie inside a polygon. (p. 252)
interior points (in-TEER-ee-ur POYNTS) All
points in a plane between two rays that form an
angle. (p. 242)
interquartile range (in-tur-KWOR-tile RAYNJ)
The difference between the upper quartile and
the lower quartile. (p. 223)
intersecting lines(in-tur-SEKT-ing LYENZ) Two
lines that cross at exactly one point. (p. 241)
intersecting planes(in-tur-SEKT-ing PLAYNZ)
Two planes that cross at exactly one line. (p. 241)
inverse operations(IN-vurss op-uh-RAY-shuhnz)
Operations that “undo” one another; for
example, 3 • 6 18 and 18 6 3 are inverse
operations. (p. 12)
Inverse Property of Addition(IN-vurss PROP-ur-tee
UHV uh-DISH-uhn) The sum of an integer and
its additive inverse is 0. a(a) 0. (p. 14)
Inverse Property of Multiplication (IN-vurss
PROP-ur-tee UHV muhl-tuh-pluh-KAY-shuhn)
is the multiplicative inverse ofa, or the
reciprocal ofa.
a• 1 and • a1. (p. 130)
inverse proportion (IN-vurss pruh-POR-shuhn) A
relationship in which an increase or decrease in
one quantity causes the opposite kind of change
in the other quantity. (p. 164)
irrational numbers (i-RASH-uh-nuhl NUHM-burz)
Numbers that cannot be expressed as the
quotient of two integers, , where b 0. (p. 279)
isometric drawing (eye-suh-MET-rik DRAW-ing)
A pictorial view of a three-dimensional figure
created on an isometric dot grid. It is made up
of three types of lines: vertical lines, lines going
30
to the right, and lines going 30 to the left.
(p. 304)
isosceles triangle (eye-SOSS-uh-leez
TRYE-ang-guhl) A triangle with two congruent
sides. (p. 254)
iteration (it-ur-AY-shuhn) A repeating step in a
visual pattern. (p. 355)
K
kite (KITE) A quadrilateral with two pairs of
adjacent sides that are congruent. The measures
of its angles are each less than 180. (p. 260)
L
lateral area (LAT-ur-uhl AIR-ee-uh) The sum of
the areas of the lateral faces or lateral surfaces of
a three-dimensional figure. (p. 308)
lateral face (LAT-ur-uhl FAYSS) Any face of a
polyhedron that is not a base. (p. 308)
lateral surface of a cylinder(LAT-ur-uhl SUR-fiss
UHV UH SIL-uhn-dur) The curved surface that is
not the base. (p. 310)
Law of Exponents for Division(LAW UHV
ek-SPOH-nuhnts FOR di-VIZH-uhn)
amanamn, where a 0. (p. 19)a
b1
a1
a1
aGlossary 429Extended Glossary