Geometric Proof

What is the justification?

• Definition of Supplementary Angles

• Vertical Angles Theorem

• Definition of an Angle Bisector

• Angle Addition Postulate

What is the justification?

• Congruent Complements Theorem

• Definition of Perpendicular

• Definition of a Right Angle

• Definition of Complementary Angles

What is the justification?

• Definition of Congruence

• Segment Addition Postulate

• Transitive Property of Congruence

• Definition of Midpoint

What is the justification?

• Definition of an Angle Bisector

• Complementary Angles Theorem

• Definition of a Right Angle

• Angle Addition Postulate

What is the justification?

• Angle Addition Postulate

• Angle Bisector Definition

• Addition Property of Equality

• Supplement Theorem

• A
• B
• C
• D

Which line is congruent to EF?

• HG

• HF

• GF

• IE

∆ABC≅∆XYZ
which is true?

• AB≅XY

• AB≅YX

• AB≅XZ

• BC≅CB

△BAC ≅ △QPR. If ∠B = 2x and ∠Q = 10, find the value of x.

• 2

• 4

• 5

• -5

If  Δ ABC ≅ Δ DEF , which angle is congruent to angle B?

• ∠E

• ∠D

• ∠C