scatter plot (SKAT-ur PLOT) A graph that
compares two related sets of data on a
coordinate plane. (p. 228)
scientific notation(sye-uhn-TIF-ik noh-TAY-
shuhn) A number is written in scientific notation
when it is the product of two factors. One factor
is greater than or equal to 1 but less than 10, and
the other factor is a power of 10 in exponent
form. (p. 90)
secant (SEE-kant) A line that intersects a circle at
two points. (p. 263)
sector (SEK-tur) The region in a circle bounded by
two radii and their intercepted arc. (p. 262)
selling price (SEL-ing PRISE) The amount for
which an item is sold. (p. 189)
semicircle (SEM-ee-sur-kuhl) An arc that
connects the endpoints of a diameter. (p. 262)
sequence (SEE-kwuhnss) A list of numbers in a
specific order. (p. 352)
significant digits(sig-NIF-uh-kuhnt DIJ-its)
Digits that give a reasonable impression of the
precision of a measurement. They are all nonzero
digits, zeros between nonzero digits, and zeros
following the last nonzero digit to the right of the
decimal point. (p. 273)
similar figures (SIM-uh-lur FIG-yurz) Figures that
have the same shape but that may be a different
size. (p. 164)
simple interest (SIM-puhl IN-tur-ist) The amount
of money earned or paid only on the principal for
a stated period of time. (p. 198)
simplest form (SIM-plist FORM) 1. The form of an
expression that has no like terms. (p. 33) 2. The
form of a fraction or a mixed number in which 1 is
the only common factor of the numerator and the
denominator; also called lowest terms. (p. 111)
simulation (sim-yuh-LAY-shuhn) A mathematical
experiment that is used to approximate the
results of a real-life situation. (p. 337)
skew lines (SKYOO LYENZ) Lines that are in
different planes and are neither intersecting nor
parallel. (p. 241)
slant height (of a cone)(SLANT HITE [UHV
UH KOHN]) The altitude of the lateral surface.
(p. 311)
slant height (of a pyramid)(SLANT HITE [UHV
UH PEER-uh-mid]) The height of each lateral
face. (p. 308)
slope (SLOHP) A ratio that measures the slant, or
steepness, of a line. (p. 364)
solution of an equation (suh-LOO-shuhn UHV
AN i-KWAY-zhuhn) A value for a variable that
makes an algebraic equation true. (p. 35)
solution set(suh-LOO-shuhn SET) A set that
contains all the values for the variable that make
the equation or inequality true. (p. 56)
sphere (SFEER) A three-dimensional figure with all
points the same distance from the center. (p. 303)
spreadsheet (SPRED-sheet) A technological tool
used to organize and analyze data. (p. 213)
square (SKWAIR) A parallelogram with four right
angles and four congruent sides. (p. 260)
square of a number (SKWAIR UHV UH
NUHM-bur) A term meaning to multiply a
number by itself or to raise a number to the
second power. (p. 276)
square prism (SKWAIR PRIZ-uhm) A rectangular
prism whose faces are all squares. Also called a
cube. (p. 302)
square pyramid (SKWAIR PEER-uh-mid) A
pyramid that has a square base. (p. 302)
square root of a number (SKWAIR ROOT UHV
UH NUHM-bur) A number that, when multiplied
by itself, equals the original number. (p. 276)
standard form (STAN-durd FORM) 1. The form in
which a number is usually written. (p. 18) 2. The
form of a polynomial with one variable whose
terms are written in order from greatest degree
to least degree. (p. 383)
stem-and-leaf plot (STEM-AND-LEEF PLOT) A
display that uses the digits of the numbers in a data
set to show how the data are distributed. (p. 220)
straight angle (STRAYT ANG-guhl) An angle
that measures 180. (p. 242)
Subtraction Principle (suhb-TRAK-shuhn
PRIN-suh-puhl) To subtract a rational number,
add its opposite. aba(b). (p. 81)
Subtraction Property of Equality
(suhb-TRAK-shuhn PROP-ur-tee UHV
i-KWOL-uh-tee) When you subtract the same
number from both sides of an equation, you
get a true statement. If a b, then a c b c.
(p. 36)
Subtraction Property of Inequality(suhb-TRAK-
shuhn PROP-ur-tee UHV in-i-KWOL-uh-tee) If
ab, then acb c. This statement is also
true if is replaced by , , or. (p. 60)
supplement (SUHP-luh-muhnt) An angle of a pair
of angles having a sum of 180. (p. 244)Glossary 435Extended Glossary