Critical Thinking
The route that the runners will follow in
Saturday’s race is in the form of a pentagon.
The sides of that pentagon measure about
4 miles, 8 miles, 5 miles, 3 miles, and
4 miles. About how many miles is the perimeter
of the polygon formed by the race route?
3
(^34)
1 4
2
In This Chapter You Will:
●Distinguish between precision and
accuracy in measurements
●Use formulas to find the perimeter
and area of polygons, complex figures,
and circles
●Find the positive and negative square
roots of perfect and nonperfect squares
●Distinguish between rational and
irrational numbers
●Use the Pythagorean Theorem
●Explore the effect of changes in
dimensions on the areas of polygons
●Identify line, rotational, and
point symmetry
●Apply the strategy:
Account for All Possibilities
●Look for new vocabulary words
highlighted in each lesson
●A point is an exact location in space.
●A line is a continuous set of points
in a straight path.
●Perpendicular lines form right
angles.
●A polygon is a closed plane figure
composed of line segments that
only intersect at their
endpoints.
● A diameter of a circle
is any chord that
intersects the
center of the
circle.
- Skills Update Practice
- Practice Activities
- Audio Glossary
- Vocabulary Activities
- Calculator Activities
- Enrichment Activities
- Electronic SourceBook
Chapter 10 271