body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Dashboard

Pearson Geometry Common Core, 2011 View details

Chapter Review

Continue to next subchapter

Exercise 13 Page 72

How long is PH?

0.5

Practice makes perfect

Using the given diagram, we want to find the midpoint of AG.

In order to find the midpoint, we need to first find the length of the segment using the Ruler Postulate. The Ruler Postulate states that the distance between two points can be found by taking the absolute value of the difference of their coordinates.

PH=|a-g|

SubstituteII

a= -2, g= 3

PH=| -2- 3|

SubTerm

Subtract term

PH=|-5|

AbsNeg

|-5|=5

PH=5

The midpoint is half of the distance, or 5÷2=2.5 units, between P and H.