TEKS.MATH.9-12.III.D

Given, "If angles are congruent, then the measures of the angles are equal." Identify the inverse.

• If the measures of the angles are equal, then the angles are congruent.
• "If angles are not congruent, then the measures of the angles are not equal."
• If the measures of the angles are not equal, then the angles are not congruent.
• If the angles are not congruent, then the measure of the angles are equal.

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TEKS.MATH.9-12.III.D

What does this mean?

• Conditional Statement
• Inverse Statement
• Converse Statement
• Contrapositive Statement

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TEKS.MATH.9-12.III.D

What assumption would you make to start the indirect proof of ∆ABC≅∆DEF?

• ∆ABC≠∆DEF
• ∆ABC≇∆DEF
• <ABC≠<DEF
• AB≅DE

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TEKS.MATH.9-12.III.D

Find the value of x

• 87°
• 54°
• 101°
• 92°

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TEKS.MATH.9-12.III.D

What are the 2 missing pieces of information?

• Transitive Property, SAS(Side-Angle-Side)
• Reflexive Property, SAS(Side-Angle-Side)
• Transitive Property, SSS(Side-Side-Side)
• Reflexive Property, SSS(Side-Side-Side)

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TEKS.MATH.9-12.III.D

What is the justification?

• Symmetric Prop.
• Angle addition postulate
• Reflexive Prop
• Transitive Prop.

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TEKS.MATH.9-12.III.D

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

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TEKS.MATH.9-12.III.D

What is the "reason" for step 4 of the proof?

• proof
• AAS
  ≅ Thrm
• ASA
  ≅ Thrm
• SAS
  ≅ Thrm

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TEKS.MATH.9-12.III.D

Name the property.
If A is in the interior of <BDC, then m<BDA + m<ADC = m<BDC. 

• Reflexive
• Transitive
• Segment Addition Postulate
• Angle Addition Postulate

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TEKS.MATH.9-12.III.D

In the given proof, what is the reason for step 1?

• Angles that form a linear pair are supplementary.

• Angles of Equal Measure are Congruent

• Reflexive Property of Congruence

• Definition of a Perpendicular Bisector

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TEKS.MATH.9-12.III.D