Geometric Two Column Proof

Which of the following is the best option to fill in for blank #1 in the STATEMENTS section of this geometric proof?

• Given

• m∠1 + m∠3 = 180°

• ∠1 ≅ ∠4

• ∠1 and ∠3 are supplementary

• Transitive Property of Equality

• Substitution

• Reflexive Property of Equality

• Transitive Property of Congruence

Fill in the blanks to complete the geometric proof:

• ∠PQR = 38; B: Definition of Complementary Angles; C: Subtraction

  Property of Equality

• ∠PQR = 38; B: Definition of Supplementary Angles; C: Reflexive Property

• ∠PQR = 38; B: Definition of Vertical Angles; C: Transitive Property

• ∠PQR = 38; B: Definition of Complementary Angles; C: Substitution

In a geometric proof, statements go on the ____ side

• left

• right

• transative

• POE

When writing a proof start with ......

• The given

• Transative property

• Supplementary angles

• Subtraction POE

What is the justification?

• Symmetric Prop.

• Angle addition postulate

• Reflexive Prop

• Transitive Prop.

What is the reason?

• Definition of Complementary

• Definition of 180 

• Definition of supplementary

• Angle Addition

What is the REASON for Statement #2?

• Given

• Definition of Complementary Angles

• Substitution Property

• Reflexive Property of Congruence

What is the REASON for Statement #3?

• Given

• Definition of Complementary Angles

• Substitution Property

• Reflexive Property of Congruence

What is the reason?

• Definition of perpendicular

• Definition of Right angle

• Definition of 90 

• Definition of angle