Geometry Proof Definitions

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

• Reflexive Property of Congruence

• Corresponding Parts of Congruent Triangles are Congruent

• Angles that form a linear pair are supplementary.

• Alternate Interior Angles are Congruent.

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

What is the "statement" for step 3 of the proof? 

• ∡EDA≅∡DCB

• ∡AED≅∡BEC

• DE=CE

• ∡AED≅∡CED

What is the "statement" for step 2 of the proof?

• ∆BAC≅∆DAC

• BC=DC

• ∡B≅∡D

• ∡BAC≅∡DAC

Q1. What is the angle of a right triangle?

• A) 100°

• B) 80°

• C) 90°

• D) 180°

Q1. What is the measure of a right angle?

• A) 100°

• B) 80°

• C) 90°

• D) 180°

Which are pairs of vertical angles?

• ∠COB & ∠COA

• ∠AOD & ∠AOC

• ∠COB & ∠AOD

• ∠BOD & ∠AOD

Angles  a and e are what type of angles?

• Vertical Angles

• Corresponding Angles

• Alternate Interior Angles

• Alternate Exterior Angles

Angles  e and d are what type of angles?

• Vertical Angles

• Corresponding Angles

• Alternate Interior Angles

• Alternate Exterior Angles

• 2x-6=7x+4
• 2x-6+7x+4=90
• 2x-6+7x+4=180
• 2x-6+7x+4=360