Glencoe Geometry Interactive Chalkboard
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GLENCOE DIVISION
Glencoe/McGraw-Hill
8787 Orion Place
Columbus, Ohio 43240
Lesson 1-1 Points, Lines, and Planes
Lesson 1-2 Linear Measure and Precision
Lesson 1-3 Distance and Midpoints
Lesson 1-4 Angle Measure
Lesson 1-5 Angle Relationships
Lesson 1-6 Polygons
Example 1 Length in Metric Units
Example 2 Length in Customary Units
Example 3 Precision
Example 4 Find Measurements
Example 5 Congruent Segments
Find the length of
.
The long marks are centimeters, and the shorter marks are
millimeters. There are 10 millimeters for each centimeter.
Answer:
is about 42 millimeters long.
Find the length of
.
The ruler is marked in centimeters. Point R is closer to the
5-centimeter mark than to 4 centimeters.
Answer:
is about 5 centimeters long.
a. Find the length of
Answer: 18 mm
b. Find the length of
Answer: 2 cm
Find the length of
.
Each inch is divided into sixteenths. Point E is closer
to the 3-inch mark.
Answer:
is about 3 inches long.
Find the length of
.
Each inch is divided into fourths. Point G is closer to the
-inch mark.
Answer:
is about
inches long.
a. Find the length of
Answer:
in.
.
b. Find the length of
Answer:
in.
.
Find the precision for
inches. Explain its meaning.
The measuring tool is divided into
-inch increments. Thus,
the measurement is precise to within
Answer: The precision is
be
inches to
inch.
inch. The measurement could
inches.
Find the precision for 15 millimeters. Explain its
meaning.
The measuring tool is divided into millimeter increments.
Thus, the measurement is precise to within
(1) or
0.5 millimeter.
Answer: The precision is 0.5 millimeter. The
measurement could be 14.5 millimeters
to 15.5 millimeters.
PRECISION Find the precision for each measurement.
Explain its meaning.
a. 88 millimeters
Answer: The precision is 0.5 millimeter. The measurement
could be 87.5 millimeters to 88.5 millimeters.
b.
Answer: The precision is
could be
inch. The measurement
inches to
inches.
Click the mouse button or press the
Space Bar to display the answers.
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