711

9.1Basic Geometric Figures;

Angles

9.2Parallel and Perpendicular

Lines

9.3Triangles

9.4The Pythagorean

Theorem

9.5Congruent Triangles and

Similar Triangles

9.6Quadrilaterals and Other

Polygons

9.7Perimeters and Areas of

Polygons

9.8Circles

9.9Volume

Chapter Summary and

Review

Chapter Test

Cumulative Review

9

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fromCampus to Careers

Surveyor

Surveyors measure distances, directions, elevations (heights), contours (curves),
and angles between lines on Earth’s surface. Surveys are also done
in the air and underground. Surveyors often work in
teams. They use a variety of instruments and electronics,
including the Global Positioning System (GPS). In general,
people who like surveying also like math—primarily
geometry and trigonometry. The field attracts people with
geology, forestry, history, engineering, computer science,
and astronomy backgrounds, too.

In Problem 83of Study Set 9.5,you will see how a surveyor,
using geometry, can stay on dry land and yet measure the
width of a river.

An Introduction to Geometry

JOB TITLE:

Surveyor

EDUCATION:

Courses in algebra, geometry,

trigonometry, and computer science are

required.

JOB OUTLOOK:

Job growth is expected to be

21% through 2016—much faster than the

average for all occupations.

ANNUAL EARNINGS:

In 2008, the annual

median income was $53,120.

FOR MORE INFORMATION:

http://www.bls.gov/k12/math03.htm