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McGraw Hill Integrated II, 2012

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McGraw Hill Integrated II, 2012 View details

1. Angles of Triangles

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Exercise 68 Page 343

Think of each piece as their own expressions.

Substitution Property

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To identify the Property of Equality being demonstrated by the given equations, we should first identify the operation being performed.

Ifm∠ 1+m∠ 2=90 andm∠ 2=m∠ 3, thenm∠ 1+m∠ 3=90. In this case, we are given three equations. m∠ 1+ m∠ 2= 90 m∠ 2= m∠ 3 ⇓ m∠ 1+ m∠ 3= 90 This demonstrates the Substitution Property.

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Exercises p.339-343