The Facts On File Algebra Handbook

hexahedron ASOLIDthree-dimensional HEXAGON, with six equal SQUARE

sides; a CUBE.

highest common factorThe largest number that can be factored out of both

the NUMERATORand the DENOMINATOR.

See alsoGREATEST COMMON FACTOR;SECTION IV CHARTS AND

TABLES.

histogramABAR GRAPHthat shows both the type and frequency of a value.

horizontal axisThe x-axis in a CARTESIAN COORDINATE SYSTEMgraph.

horizontal lineA line on a GRAPHthat has no SLOPEand intersects the y-axis

at only one point.

hyperbolaThe shape of a DISCONTINUOUS GRAPHof an inverse variation in

algebra.

hypotenuseThe side of a RIGHT TRIANGLEthat is opposite the RIGHT ANGLE.

This is also always the longest side of a right triangle.

See alsoSECTION IV CHARTS AND TABLES.

hypothesisA theory that is not proved, but is supposed to be true, so that it

can be further tested for PROOF.

GLOSSARY hexahedron – hypothesis

GLOSSARY hexahedron – hypothesis

Hexahedron

x

horizontal

line

Horizontal line

O

y

x

Hyperbola