Intro to Two Column Proofs

What is reason 2?

• Given

• Addition Property of Equality

• Subtraction Property of Equality

• Substitution Property of Equality

What is reason 3?

• Addition Property of Equality

• Subtraction Property of Equality

• Multiplication Property of Equality

• Division Property of Equality

What is reason 2?

• Addition Property of Equality

• Subtraction Property of Equality

• Multiplication Property of Equality

• Division Property of Equality

What is the missing statement in the proof?

• 2m∠ABD=m∠ABD+m∠ABD

• m∠ABD=m∠DBC

• m∠ABC=m∠ABC

• m∠ABD+m∠ABD=m∠ABD+m∠DBC

Which is the correct reason for statement 1 in the proof?

• Definition of Congruent Angles

• Substitution

• Transitive Property

• Given

What is the missing statement in the proof?

• Subtraction p.o.e.

• Substitution p.o.e.

• Transitive p.o.e.

• Symmetric p.o.e.

Which is the correct reason for statement 2 in the proof?

• Given

• Transitive Property

• Definition of Congruent Angles

• Vertical Angles are congruent.

What is reason 3?

• Addition Property of Equality

• Subtraction Property of Equality

• Multiplication Property of Equality

• Division Property of Equality

What is the justification?

• Symmetric Prop.

• Angle addition postulate

• Reflexive Prop

• Transitive Prop.

Q1. What is the property of equality that states if a = b, then b = a?

• A) addition POE

• B) angle addition POE

• C) subtraction POE

• D) substitution POE