The Facts On File Algebra Handbook

(Marvins-Underground-K-12) #1
isosceles trapezoidAQUADRILATERALwith two nonparallel sides that are
equal in length.
See alsoSECTION IV CHARTS AND TABLES.
isosceles triangleATRIANGLEwith two sides that are equal in length.
See alsoSECTION IV CHARTS AND TABLES.
Law of FractionsWhen the NUMERATORand DENOMINATORare divided by
the same number or multiplied by the same number, the value of the
FRACTIONremains the same. For example, if the numerator and
denominator in the fraction^4 – 8 are both multiplied by 2, the fraction
becomes— 168 , and is still the same value as^4 – 8. If the numerator and
denominator are both divided by 2, the fraction becomes –^24 , and the
value remains the same. This law is used for finding the lowest and
highest common TERMs of a fraction.
leading coefficientThe COEFFICIENTwith the highest degree in a
POLYNOMIAL.
least common denominatorThe number that is the LEAST COMMON
MULTIPLEin the DENOMINATORof two or more FRACTIONs. For
example, in the fractions–^34 +– 32 , the least common denominator is 12,
as it is the lowest common MULTIPLEof the denominators of 4 and 3,
and when factored the fractions would become— 129 +— 128. In the
fractions– 32 +–^36 +–^79 , the least common denominator is 18 and the
fractions would become— 1812 +— 189 +—^1418.
least common multipleThe number that is smallest in value of common
MULTIPLEs. For example, 12, 24, and 36 are common multiples of
both 3 and 4, and the least common multiple is 12.
legs The two sides of a RIGHT TRIANGLEthat are not the HYPOTENUSE.
like termsAny TERMs that have the same VARIABLEbut different
COEFFICIENTs. For example, 3x+ 7xhas the same variable x.
line segmentA piece of a straight line that is a specific length, and usually
marked at the ends, for example, with A and B, to show that it is a
particular line segment. For example, A————B. The shortest
DISTANCEbetween two points is a straight line, which is a line segment.
linear equationAn EQUATIONthat has two CONSTANTs and one VARIABLE, often
written as ax+b= 0. An equation with exactly two variables, each of
which is involved with addition, subtraction, MULTIPLICATION, or
division, and neither of which is raised to a POWERabove 1, nor in a
DENOMINATOR, nor is the PRODUCTof the two TERMs, is called a linear

GLOSSARY isosceles trapezoid – linear equation


GLOSSARY isosceles trapezoid – linear equation


Isosceles triangle


a

b

Legs

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