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Pearson Geometry Common Core, 2011

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Pearson Geometry Common Core, 2011 View details

3. Measuring Segments

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Exercise 10 Page 24

The Ruler Postulate is used to find the distance between points on a segment.

11 units

Practice makes perfect

To find the length of AD, let's consider the given number line.

According to the Ruler Postulate, the distance between two points is the absolute value of the difference between their coordinates.

AD=|a-d|

a= -8, d= 3

AD=| -8- 3|

Subtract term

AD= |-11|

|-11|=11

AD=11

The length of AD is 11 units.

Subchapter links

Lesson Check p.23

Practice and Problem-Solving Exercises p.24-25

Standardized Test Prep p.26

Mixed Review p.26