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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

1. Angles of Triangles

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Exercise 66 Page 343

What do you need to do to obtain XY=WZ from XY-AB=WZ-AB?

Addition Property of Equality

Practice makes perfect

Let's examine the given statement and determine the property that justifies the statement. If XY-AB=WZ-AB, then XY=WZ.

In order to obtain XY=WZ from XY-AB=WZ-AB, we add AB to both sides of the equation. XY-AB + AB=WZ-AB + AB ⇓ XY=WZ Therefore, Addition Property of Equality justifies this statement. If a=b, then a + c=b + c.

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Exercises p.339-343